Is majoring in bio and doing premed at northwestern really that bad?

I would like to go to a vet school or a medical school in the future, but everyone keeps on telling me that the courses at northwestern are too hard to maintain a good gpa and prep for medical school, especially organic chemistry, and that i should just go to another college I was accepted into. Is it really that hard? Any advice? I know the experience will differ from person to person, but i wanted some advice on this before i make a decision.