Most of what I've read about anti-aging suggests that the same treatments would allow people to live longer and _healthier_ lives, which solves half the problems you're mentioning. But hey, maybe it doesn't and just pushes it back another 10 years. Still, I'll take an extra 10 healthy years.

I'm not disagreeing with your premise that we should fix these social problems, but it feels a bit orthogonal. In addition to that, it seems like human policies are reactionary. So making people live longer seems like a good way to make these things more important to more people, and thus sufficient enough to pass the threshold to actually do something about it.