Most people don't currently donate all their disposable income to charity.

I do. I give away all my earnings and my husband gives about 20% of his, so we live on a much smaller budget than most people we know.

People on cryonics may not feel the need to spend millions on costly end-of-life treatments</i>

This would be good. But it would be good if people laid off the end-of-life spending even without cryonics.

Finally, ask yourself "If I was offered cryonics for free, would I sign up?"

Maybe. I only heard of the idea a week ago - still thinking.