There's probably an absurdity bias going on in the rejection of cryonics (the dead just don't come back, and frozen people look dead). It also violates tradition (burying and incineration). And in our culture, the mere image of frozen bodies in a fridge has more disgusting connotations than happy ones.
So that's my speculation about why someone who never actually thought about cryonics might reject it. Maybe if we tell those people about these reasons, they could change their mind?
Thanks for the tip. I will talk about those things, but I'm not optimistic--the people I was referring to are theists and may not be very good at changing their minds. I think it's worth an attempt, though.
So, apparently appsumo is having a custom reddit bundle, a bundle meant to appeal to redditors, and 10% of the proceeds get donated. On the surface, doesn't sound _that_ interesting, except...
Take a closer look: http://appsumo.com/reddit-special-deal/ and find that the recipient of the donations will be... SENS!
I find this to be an interesting development. It wasn't the "custom transhumanist bundle" or "the custom sens bundle" but "the custom reddit bundle". Yes, "reddit" doesn't, in and of itself, count as extremely mainstream as such, but I'd say it's still an interesting development.