The problem with becoming a PA is that you have to do 4 yrs of undergrad, and nowadays it’s so competitive that you have to have nearly as good grades in your premeds as if you were going to med school. So it’s six years or so of training after high school, but if you fall off the track at any point, you’re not equipped really to earn a living. Also, PA’s are not permitted to practice independently - they need to be supervised by an MD or DO.
The fact is, if you want to be prepared and equipped to practice medicine, you should go to medical school. But the reality is that APRNs and PA’s are nowadays allowed to do most of what a doctor does, with about 1/10th the training. So if you don’t want the hard road of medical school and residency, there are easier paths.