I agree with seaglass. I also think that it's difficult for a 19 y.o. (that's how old EU students are when they graduate from HS) to know for sure that they want to go to med school. Personally, I changed my career choice 2-3 times in college and in the end, ended up doing something totally different anyway.
IMO, at least for Italy, the 6 year program is much more theoretical than med school in the US. I think my BF, who is about to graduate med school here this fall, told me his rotations lasted 1 week in the various specialties. Based on this "experience" he had to choose where he wanted to do his internship and he's been there for the last 3-4 years. And even at that, since the students are not really required to be in the hospiral, some students graduate not really knowing how to deal with patients. I know one guy that just gradauted and never did rounds in the hospital. Granted, he has no intentions of actually practicing human medicine bc he is already a practicing vet, but it just goes to show you what the graduation standards are like here.