A lot of answers have been dancing around the question, which is odd, because it's a very easy question to answer.
Any sentient being that created a place of endless suffering and in fact sent other sentient beings there to experience said endless suffering would be evil. Very, very, evil. Regardless of what those individuals did. It is a very thoroughly documented fact that severity of punishment has little to no effect on preventing an action, only certainty of being caught.
Any moral system that says otherwise is as useful as a logic system where True entails False. If it can ever not be evil to consign a sentient being to endless suffering, then the moral system has lost all useful meaning. A lot of religions don't say this though.
You specifically gave Abrahamic religions as an example of a group of religions that do say this, and while it's tempting to say that the founding documents for these religions often don't actually include Hell, the very fact that you think they say this is indicative of a very important point - there is a lot more to a religion than just the founding document.
There are a lot of modern pseudo-abrahamic religious groups (I'm genuinely not sure how else to describe them) which preach about an all powerful deity that created hell and actively sends sentient beings there. The deities described by these groups are very definitively evil. Even an all powerful being that created our universe (or any universe ultimately ruled by entropy(1)) would be evil, without need of making something even worse and then threatening it as punishment to sentient beings here.
1] The only justification for creating a universe with sentient beings in it and which is ruled by entropy is if you yourself are bound by entropy (and so not all powerful), cannot do better, and have a really -really- good reason for using up your own scarce resources in creating said universe at all. Why? Because entropy ensures, by it's very nature, scarcity and hardship.
The simplest way to explain entropy is that it is disorder, or 'mixed up-ness' of a collection. If you don't like numbers, skip to the 'game part' below.
Consider a universe consisting of the the numbers 1 through 1000. They could be in increasing order from 1 to 1000 or they could be in a completely random order. The first would be a minimal entropy configuration and the second a maximum entropy configuration.
In a (simplified, so it fits in a single SE answer) entropically governed universe, to do something you must make use of amount of 'ordered-ness' to fuel that action. To 'fuel' an action, take two fixed blocks of numbers, add up each, and the difference between the higher block and the lower block is your 'fuel'. To use this fuel, you swap numbers so that the difference between the two blocks decreases. At first, in the perfectly ordered universe, there is plentiful fuel - you can take the block 1 through 10 (adding up to 55) and the block 991 to 1000 (adding up to 9955), and have 9900 fuel.
In the latter universe however, the fixed block of 10 numbers will be random values. Any given block will add up to roughly the same as another block of the same size (for there to be an expected difference, there would have to be a reason to, and there won't be enough fuel to do literally anything you actually want to do.
But is the former always guaranteed to become the latter? As it turns out, the answer to that question is exactly whether or not that universe entropically bound. The universe described above is entropically bound, eventually all blocks will add up to the same amount and no fuel to do anything will remain. To expend fuel, two blocks must move closer to each other in their sum. So at least one of the two blocks must move closer to a sum of 5000 and the other block can only move away from 5000 if it itself is between the block that moves closer to 5000 and 5000. This may not be easy to picture in your head, but that's okay, you don't have to!
The Game Part
Take a piece of paper, and put some coins on it, so that no two coins line up horizontally (because you'll be sliding them back and forth, horizontally). The fuel action above is the same as sliding two coins horizontally until they line up vertically, equally between where they were before. If you play this for a while, your coins will inevitably end up as a straight line and your coiniverse will have experienced horizontal sliding death. This is entropy.
All useful actions, all useful resources, all things you actually want to do in an entropically governed universe require sliding a coin some minimum amount.
By all evidence, we appear to live as something like a collections of these coins a very big such piece of paper, with more complicated rules that ultimately follow the same limitations.
A) But what about fixing it? Re-ordering it to have more fuel?
If you can do this, some reset option or if the action to re-order the numbers is cheaper than the new fuel it makes, then the universe is not entropically governed and you can do useful actions that you want to do forever. All evidence suggests this is not the universe we live in.
B) What about getting fuel from somewhere else?
If that somewhere else is the same universe, then you are only delaying the problem, increasing your starting fuel capacity does not prevent you from running out. If that somewhere else is not the same universe and can be accessed indefinitely for more fuel than the cost, then as in A, you are not in an entropically governed universe. All evidence suggests this is not the universe we live in.
C) What about a virtual reality where nothing is limited?
Simulating any change in that virtual reality is a useful action, and not something you can do forever. This is simply making life more efficient, so it can last longer and have more experiences before running out of fuel. It is pretending the universe is a better place than it actually is.
D) What if the universe is infinite?
Then it depends on how far away you can reach, and what the largest sum of a block is. If you have a location, and you have to expend fuel available locally to reach further away, then you may or may not live in an entropically bound universe depending on how expensive it is to reach some distance away, even if block sums can increase without bound. We are not sure if our universe is infinite, but it does appear to have an upper bound on the difference in fuel fuel in an area (the Bekenstein bound) as well as definitely being expensive to reach for fuel further away.
E) This sounds like an oversimplification of a complex concept
That's because it is. There is a lot (a lot a lot) of math this skips over, but the core intuition should be close enough to convey the concept. The fuel concept has a much deeper statement and implication in the math, for example.