Thanks for the life lessons but I really don't need it. I can come up with the same list you did and all the hard schooling and work to go with it. The basis of my whole question is of what is the road leading to a career in golf, AKA being a Golf Professional somewhere. Unfortunately by the rules of the PGA, you have to be an Assistant Pro first. I don't really know what the salary of a Club Pro is, but if rewarding enough, then yes I would consider going for it. Obviously that's a huge thing to consider, but I would take the pay cut to take that road if I had to, because to me it's like going back to school for another degree again... Been there, been broke, done that, made it through.
Since posting my question of "How do I become an Assistant Pro," all I've gotten back is why I shouldn't be one because I'm an engineer and I do well enough, so therefore don't chase something I might really want to do... Some guys just think a little differently I guess.
I can see your point that maybe some of us ventured off topic and didn't answer your question, but at the same time I don't see how your current salary factors into the information that you thought we might need to help you out? If you post on an internet forum that you are toying with the idea of leaving 6 figures to be an assistant golf pro, then you have to expect to get some responses like this. That doesn't mean they're right or wrong, it's still up to you to do whatever makes you happy.
I have no clue to the route of becoming an assistant pro, so I'm of no help to you. However, I would think going to a local country club or course and asking the current pro how to do it would be a good start.