I'm not going to argue whether parents should pay or not.... BUT
Average physician salary (according to my 2 second google) is $189,000. My school will require I take out $350k in loans to pay off, which are all unsubsidized now thanks to our wonderful government and come with a 4.5% FEE. With a likely 5 year residency after school, I will be likely looking at around 600k or more total after the interest. So I could work as a physician and put my entire salary towards my loans (no rent or anything) and thanks to taxes it would still take 5+ years to pay off. In reality, I will be living well under my means for at least a decade after finishing my training. THAT is pretty crushing.