When your going to be a professional, people expect you to be at least somewhat broadly educated. If you go to a doctor who has no idea what geometry is, or lacks a basic knowledge of history, people will freak out, and employers will think less of you.
Think of education as a point based system for character advancement. You want to put most of your points into medical oriented skills, definitely. But especially at lower levels, a little bit of variety will help you in a number of situations, and when it costs you 1 point to advance a lower priority skill, or 20 points to push that medical skill a little further, it might be worth it to spend a little bit of effort to at least be passable in a few other areas.
Think of education as a point based system for character advancement. You want to put most of your points into medical oriented skills, definitely. But especially at lower levels, a little bit of variety will help you in a number of situations, and when it costs you 1 point to advance a lower priority skill, or 20 points to push that medical skill a little further, it might be worth it to spend a little bit of effort to at least be passable in a few other areas.