Applied quantum suicide. If we are in a Big World then all we really care about is probabilities

I've never taken quantum suicide seriously, even given MWI. You speak of probabilities, but what about measures? How do I gain by ensuring that the vast majority of possible futures do not contain anything resembling me, even if the majority of those that do give me a lottery jackpot? All I'm doing if I blow myself up for failing to win the lottery is erasing the overwhelming majority of my future selves, who if asked would very likely object.