alt Hacker NewsLol. Yeah I actually hope they aren't serious about it and are just using it as an excuse to send things to space because it's cool. Because I do not foresee us colonizing Mars in our lifetimes. I'd be happy for them to test the waters for us though.
Oh they're more than welcome to go. Everyone who signs up is basically volunteering to die for science, there is simply no other end to that.