In many cases, at least in the US, it has multiple roots.
1. Society expects you to become an expert (or at least competent in something and do that forever. This is stupid, and many people would say otherwise, but it's a systemic issue.
2. By the time many people reach the point of wanting to change, they feel trapped monetarily. They have a big mortgage, cars, and other debts that they can't afford if they chuck their lucrative (however much it is) career and start over.
2a. Some people just don't want to give up their current left of comfort.
3. The pressure from #2 can increase by an order of magnitude for those who spouse/domestic partner/etc. expects/wants to stay at the same level or move up more quickly, or for those who have kids and don't want to "deprive them".
4. Many men get a big part of their identity from their jobs. If they're not "successful", they need to fight until they are to prove themselves. If they feel successful, going back to a place of having to prove themselves is terrifying. Not only will other people be judging them (perception- perhaps true, perhaps not) but what if they fail, at least to be as successful as before? Because ultimately they're judging themselves by the stupid standards noted above.
4a. This also means giving up whatever power you have accumulated (or think you have accumulated).
I'm probably forgetting something.
I realize this isn't universal, but I've seen it enough to know this set of factors covers an awful lot of people.
Yes, I understand all of that intellectually, but I can't understand how any of those trump happiness and personal fulfillment. And I suspect that is part of why I am an entrepreneur...
Roger
