I did elaborate. It's a personal choice...now that they've lived the good life, there's no turning back. Not like it's literally impossible to go back (well, I suppose technically it is, but you get what I'm saying) to their "old life."
that's how I've always looked at it, as well. I've never thought it was literally possible for them to go back to their old life. Even if they did in the material sense, there would be (for a while, at least) difficult to blend into the community after being high profile. It isn't like Kate can just start sending nurse resumes around and get a job like a regular person. A few years down the road, maybe? But not immediately after they decided to re-enter society.