There's a reason why PA is extremely popular of a career choice. I personally think that its a smart choice for many people. PA's making over 100k isn't anything new, EM or surgical PA's makes a great deal, the average PA makes around 80k.
Medical school is a very nice for people who are 20 and have no families. When you have a family it's a bit difficult to do, where as PA school provides a slightly more suitable curriculum. Doctors are also still make a decent pay, average pay is still double what PA's make. In the end, PA's are the guys/girls who could get into medical school but were smart enough to realize its not worth it and just throw away 3 years.