My own position is closer to 'a human making the world a better place is only a reliable task in incremental local ways and inevitably goes wrong at large scales because our world map is inevitiably horribly horribly flawed no matter how hard we try to perfect it outisde extraordinarily narrow areas' than 'not much motivation to do it'. Totally get what you are saying though and it can result in similar results. There are a few simple ways to throw a bit of money around if that exists though (EG givewell) which are exactly such incremental local things.
Incidentally I would actually call for dissensus on how to make the world a better place. The more things people are trying the better the odds that something will actually work and then get picked up on.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.
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