This should go to the backroom.

To each their own, and unless the person states otherwise, I think the person's relatives should have the choice. Personally, I would want to donate above living as a vegetable, as there's no point whatsoever, you'll just consume resources and not be doing anything for ages. Your family will have a massive financial burden as well. If you believe in it, you'll get reborn later or go to heaven later, which can't be a good thing.