Well, I would prefer staying on earth. Seems safer. Plus, I don't like all that 2 ½ hours of exercise everyday that astronauts go through. On earth you can just go for a walk for about an hour and don't eat too much, and you'll be fine, but in space, you'll lose bone density, among other stuff if you don't exercise. Plus, you also have to fear high energy particles like alpha, beta particles, and bare nuclei that can cause mutations your DNA , and earth is much more protected from them than the space station.
So thanks, but no thanks.