I'll give you a short answer...
I was drawn to 2 things. First, the hours per work week vs. salary is good. You don't see too many pods working over 50 hours a week (many are between 40 and 50) and you can still be over $200,000 in yearly income. I witnessed this with the pods I shadowed (city of about 400,000 people in Washington State). Second, I liked that you are not limited to one medical specialty/sub-specialty. You are an orthopedic, an endocrinologist, a dermatologist, a pediatrician, a surgeon, etc. who is limited to the foot and ankle. This is opposed to an orthopedic surgeon (MD) who sees multiple bones/joints but is limited in pathologies presented and treatment options (ACL reconstructions have to get old, right?). This goes both ways of course, I just happened to find the former more interesting.