I believe my values are well aligned with those of the LW community; wanting to Save The World is a good applause light but I believe most people want to do so for selfish reasons.

Yeah. My initial motivation was mostly having me and friends/family being able to be around for a while.

My values have since drifted to become more altruistic ("Well, even if hypothetically me, everyone I'll ever meet and like, and enough people to keep the economy running will be able to live, I might as well try to save other people because it's not like I'm really doing anything better").

I would also like to ask LW members: why do you prefer to contribute (in part) towards humankind-wide X-risk problems rather than more narrow but personally important issues?

Because I don't want to outlive everyone that I love.

Also yeah, cryonics. Good luck.