I cant speak for a pilot but from a mechanics point of view... An airplane is an airplane is an airplane. I work on the barbie jet variety and if I am able to keep my job/QOL for 20+ years that would be fantastic. What is wrong with being happy with where you are?
In pilot circles, 10+ years at a regional is considered a career failure and instantly throws up red flags about your competency and character. There's a big stigma as to why you didn't make it to a major.