I think the parent has a fair argument, and I don't think blueskin_ was really off either. Do you know -- actually know -- the current state of the science behind cryonics? If so, good on you, but if not (more likely), how do you know exactly what the probability of being revived later is?

People (even not-so-rich people) spend upwards of tens to hundreds of thousands of dollars just to prolong their own life a couple months. How is the cost of that expense more justifiable than even a small probability of being revived in the future and becoming healthy and possibly immortal?

In the end, it's a judgment call as to what you do with your money. Unfortunately, fear of mortality and death is a very strong motivator for a lot of people, so we don't necessarily spend money related to death in a particularly optimal way. It's the height of arrogance to suggest that your way is better, or, even if it is objectively better, to impose your views on someone else's use of their money.