Sucker for Punishment

So I've been reading a lot of blogs by med students or young doctors lately, and I also just finished reading The House of God. What do the vast majority of them have in common? (Ok, maybe 'vast majority' is a slight exaggeration, I should probably say 'fair proportion'.) They tell their readers to RUN, RUN LIKE CRAZY AWAY FROM THIS PROFESSION AND NEVER LOOK BACK!!! And yes, they really are that emphatic. Which makes me wonder, after hearing about the terrible hours everyone works, the huge amount of debt I'll be in by the time I finish uni, the demeaning hierarchical system of the industry and the oh so wonderful times I'll have disimpacting people, why would I still want to do it? I don't mean the same reasons as those that have made me decide to give a medical career a shot in the first place, such as wanting to work with people every day, and the opportunity for continuing education the whole way through, but rather the reason why everyone's advice to do anything OTHER than medicine doesn't succeed in turning me off the whole idea. I think it must be the whole challenge of it - which sounds horrible, I know. I'd hate for anyone reading this to think that I want to be a doctor just because it's difficult and to prove to myself that I could do it, because that's not it at all! Hmm, this is all very convoluted, but what I mean to say is that, while the real reasons for me wanting to be a doctor are less superficial, the idea of it being a challenge doesn't turn me off at all, but just makes me more inclined to give it my all, as opposed to getting away with putting in a half-baked effort, the way I've managed for most of uni so far... And surely that's not a bad thing?