I have often wondered if this much schooling is even needed. I think I could have gotten by with 2 years of undergrad prereqs, 3 years of med school, and 4 years radiology (minus transitional year) for a total of 9 years saving myself 4 years of my life... loss of 4 years of MD income!
I will never use the knowledge I gained from the last 2 years of undergrad (upper level biology/chemistry and crap humanities). 4th year of med school is essentially a waste, especially for people who want to rads, path, anesth, etc. A lot of people take a bunch of easy electives, spend months interviewing, and get very little out of the year except for maybe 1 month of sub-I. Transitional year is a waste for the same reasons. If it weren't for the friends I made during these "wasteful years", I'd be really pissed.