posted 1 week ago
(Assuming no catastrophes or close calls in either scenario...after all, both have inherent dangers far above my daily norm...)
Seeing our planet from 100 miles up would be thrilling, magnificent, life-changing, and so on, and I've been interested in it for a decent chunk of time. Plus, I am sure that I could be useful to space organizations, if nothing else than by being a twin (so they could study both me and my earthbound twin and then compare results when I return, like they did the Kelley bros).
But...I hate the "pit of my stomach" feeling on roller coasters, I don't want to be in a cramped smelly little tank with a bunch of other people for a week, astronaut food does not sound appealing (sense of smell and taste are degraded in low-G anyway), and I am struggling to keep myself fit as it is without a full week of atrophy. Bathroom and washing up procedures in the ISS are not up to my normal standards, and the prospect of seeing cosmic rays hitting my eyeballs every time I blink doesn't sound great either.
Plus, to get value out of sending me to space (how many millions of dollars per hour?) they'd regulate my every waking minute, leaving probably less time than I'd like for gazing in awe out the cupola window or playing with floating blobs of water. Worst of all, if Chris Hadfield has left a guitar up there for me, there might not be time for me to play it.
So, I'd be iffy on the offer of going to space.
Exploring the ocean floor, on the other hand, amounts to a 7 day stint on a large ship with daily excursions in a submarine, which at the very worst would be boring/uneventful but have the potential to be at least as thrilling as whale-watching, which I did once.
Once I'm back up at the surface I can eat regular meals, take regular showers, enjoy the protection from radiation afforded by our atmosphere, and maybe even get enlisted to help solve some electrical issues on a ship which would be cool. And I can go out and breathe fresh air any time I want, which would probably be a fair amount of time since the cost to have me aboard isn't literally astronomical.