Well look, one has to do cost/benefit calculations, not just blindly surge forward in some kind of post-enlightenment fervor. To me, it seems like there is only one positive term in the equation:: the altrustic value of giving money to some existential risk charity.

All the other terms are negative, at least for me. And unless I actually overcome excuses, akrasia, etc to donate a lot, I think it'll all have been a mutually detrimental waste of time.