Power
You'd think that flying miles into the air would be just the beginning of the world of power at your fingertips. Turns out, that's basically all you get.
For starters, being stuck in space isn't a great place to write a manifesto or lead a revolution. It's basically just you, the handful of people onboard whatever spacecraft you're huddled inside, and the teeny voice on the other end of the speaker way down on planet Earth.
If you go around space yelling about taxes or which way the toilet paper roll should go, all Houston has to do is turn down the volume.
You'll be a lot more powerful down on the ground. Astronauts have a lot of clout over folks whose mission it is to make the mission work. Better food, better toilets, better equipment—if the astronaut wants it, the ground-based scientists are going to figure out how to make it happen.
You've got the power over everyone in Mission Control and NASA, whose purpose is to make space exploration safe, effective, and as comfortable as possible for the astronauts.
Want to see what kind of power an astronaut really has? When they start that T-minus countdown, let them get to three and say you're not feeling good. Watch that whole thing grind to a halt. Sure, it was pointless and it cost taxpayers tens of thousands of dollars, but at least now you know you can.