Ask HN: You're a Internet millionaire. Why aren't you supporting life extension?

This question is directed to all the exited founders who I know haunt this place. I would have thought that, having achieved immense financial success from your tech efforts, why you're not now interested in supporting research to extend your existence?

There are a number of organisations out there doing what I consider to be credible, useful research. SENS Foundation obviously springs to mind. As does Imminst.org. But these institutions are always strapped for funds, desperately seeking new donations even in the 4 or 5 figures. It always struck me that HN readers of means alone could easily meet those needs.

So - why aren't you donating? Is it a credibility issue? Do you doubt the science? Do you doubt the institutions? Do you not see sufficient ROI? I'm genuinely curious. Thanks.