I know a lot of people won't find this comforting, but one thing that keeps me going is knowing that I, a decided non-expert, was able to come up with Infinitelism. I like to think that if I can come up with my own religion/philosophy/whatever that aligns with reality enough for me to live in reality without changing much, that means we have a world where even if we lose a lot of information, we'll still be able to move forward someday. I know that's cold comfort, but I find the best way of fighting despair is knowing that if the worst happens, if you lose everything and you're out on the street, there's still something you can do in order to keep going.