Nothing to defend. If you are in a career that limits your income to the fifty thousand dollar range it makes good sense to switch to medicine, even given the opportunity cost and debt, to make at a minimum of three times your terminal pre-medicine salary. I was probably limited to the $60,000-$70,000 range in engineering as a salary (assuming I didn't work for myself which not everybody has the talent or drive to do) and should be able to make close to three times that amount after "only" eight years of training. Even with my debt and the massive opportunity cost, assuming I only work until 65 I'll come out way ahead.
And sister, you are going to be so disappointed once you see what medicine is really all about. It is a good job, and I'm enjoying my field (Emergency Medicine) but words like "dream," "passion," and "healer" are going to mean very little to you in about ten years. You will see that money is important and that what's a good job for $240,000 a year is not so good for $100,000 and a real drag for $70,000. Much as I like my job, I like not doing it better,that is, I prefer a three-day weekend to three days of shifts.
You will also see how little healing you are actually going to do and how few people with really major problems you are going to cure. We just sort of manage them along, playing a shell-game with the reaper.
As long as you folks are willing to sell your mothers for the privelge of going to medical school The Man is always going to have you by the gonads. Can't we all play a little more "hard to get?"