I really liked Biology in school, and I was interested in all kinds of life sciences courses, medicine, biomed, etc. I went for Biology because I didn't think I'd be able to make a competitive medicine application, and most bio degrees are very broad and I was interested in lots of different topics.
I really enjoyed my degree, but it didn't leave me with much direction, and sometimes I wonder if I'd be in a better position by having not been so wrapped up into wanting to study at Oxford and had applied to a more vocational course like pharmacy. Doing a master's now has definitely helped I think, in terms of figuring out what I want to do and building some specific skills, but it's a luxury that's not possible for everyone, and it's a little scary to be nearly 24 and not began a 'career' yet when all my friends have already.