Actually, I would; I've donated a small amount of money already. Investing in anti-aging research won't pay off for at least thirty years - that's the turnaround time of medical research from breakthrough to useable treatment - but it's a lot less of a pie-in-the-sky concern. (Although as long as people are dying for want of $1,000 TB medication, it still might be more cost effective to save those lives than to extend the lives of relatively rich people in developed countries.)