If the Many Worlds theory (an infinite number of alternate realities where any and all possibilities are realized) is real, and we were able to travel to alternate realities where we could see how events play out differently, wouldn't it make more sense to explore all the options that many alternate realities would offer you, instead of deciding that only one option is the "correct" or "best" one?
For example: A common fantasy is to get away with robbing a bank, getting away with it, and living high on the hog for the rest of our lives. We don't actually do it because we believe theft is wrong, we're afraid of imprisonment, etc.
But if we could travel to an alternate reality why shouldn't we explore the option? In one reality out there robbing a bank, getting away with it, and living high on the hog for the rest of our lives is exactly what happens.
In another you get shot and die. In another it leads to you becoming the ruler of the planet. In another you rob the bank on the day it has no money. And in yet another you open the bank vault and God is in there and hands you a letter that reads "Ggod doesn't exist". etc. etc.
With so many possibilities wouldn't you owe it to yourself to put aside your morality and explore the possibilities? And aren't we hampered by the one set of morals and decision making capabilities that this "set" reality offers us?
Edit: How much more would it affect your decision making if you accept the notion that the effects of what you do also affect everyone and everything around you, not just your own personal path?