I don't know a single person in aviation who has had a different career beforehand that wants to go back to it. On the other hand I hear many people saying they want to get out - but they have usually had no experience of real life and work before. A 25 year old FO even told me once that he wanted to go and work in the City of London because it was less stressful. I couldn't help laughing. I mean, I know the guy was just naive, but really? Less stressful?
I love my job, it's taken a lot of hard work to get where I am. I fly a wide body on a wide variety of routes and for the actual amount of "work" that I do, I am handsomely rewarded for it. Many of my non-flying colleagues would love to do what I do and I remind myself of that quite often. Yes it's not perfect and there are things that I would change about it, but net result = I am happy.