Considering that I cannot feel my future self, why should I care for it more than I care about other people? In other words, from my present perspective, what differs future "me" from a different person?
We can argue that we only exist in the present, our future-selves and past-selves are other people.
At the same time we can argue that our present self doesn't exist at all, because present is an instant, there is no such a thing as "present" me.
If I am typing now, that's because my brain (of my past-self) told the hands of his future-self (aka current present-me) to type a few milliseconds ago.
That works the other way around. You cannot feel your present-self either, all you feel is your past-self, if you feel pain in some part of your body that's because that part sent the message through the nerves a few milliseconds ago. If you feel sad or happy or anything, it's because of memories of your past-self.
Physics about space and time tell us that there is a continuum (or a quantum succession) of your past-selves. Relativity tells us that there simultaneity is relative at two distant points, so there is no objectively simultaneous you to call "present you".
So you don't really ever worry about your future self, but about how your future-past-past-self will make feel your future-past-present-self.