I spent the first 16 years in the auto industry worried about layoffs and the fact that I was unmarketable outside the system, though I had a job that I enjoyed, driving heavy equipment in a warehouse environment. I went into the skilled trades as an electrician at 38 years old. I ended up retiring as an electrician, but the job was not near as enjoyable as the one I left. It was simply a good move on my part as the auto industry is never quite on solid ground, and electricians are far more marketable than warehousemen.
I also spent a good many years in nowhere jobs that I hated, the second of which I thought, foolishly, was a viable trade. Found out it was a loser's job and sooned joined the autoworkers. A few more jobs came then, during layoffs, that were interesting, but nothing I'd want to retire from. I've done alright for myself, but can honestly say that I never looked forward to going to work, no matter what I did. If I could make the same money from home, I certainly would have. Not many get to do what they love best for a job.