Excellent. The human species will either kill itself off in short order, or it will spread across the stars. I like to be an optimist (and I think there's good cause to be an optimist), so I lean towards the latter. We economists tend to think of the structural transition of the 19th century as a big deal. It was, in its own way, but it will pale in comparison to what we are embarking on right now.
Kate won't let me go. Even then I'm probably a few grades below "the right stuff". I think in other circumstances I'd take a one-way ticket, but not in the first wave.
Thomas Joy, my forefather, waited about ten years to go to Massachusetts after the first wave (and Massachusetts has comparable atmospheric pressure and gravity to England!). I still think he was a badass. So when it comes to Mars, I don't feel bad about visiting later. I would very much like to walk on Mars one day. Whether I die there or not depends a lot on where life takes me between now and then. If I outlive Kate I could see dying on Mars.