I am branching at a rate of 10^10^2 or so splits per second

Source? I'm curious how that's calculated.

without you especially losing anything

Well, if you have anyone that cares deeply about your continued living, then doing so would hurt them deeply in 99.999999% of universes. But if you're completely alone in the world or a sociopath, then go for it! (Actually, I calculated the percentage for Mega Millions jackpot, which is 1-1/(56^5*46) = 1-1/2.5e10 = 99.999999996%. Doesn't affect your argument, of course.)