jieunni .. I guess, in the time honoured tradition, we shall have to agree to disagree on the odd point or two.
The consideration is not medicine, per se .. rather something to use as a marketable backup to the flying... doesn't really matter what arena so long as it's marketable and, preferably, desirable for the individual.
Looking back, I have had a ball playing engineers .. but I might have done far better, in all probability, with a trade. For instance, a cousin, of similar age, retired from fulltime work running an electrical contracting business at age 55 and has since played grey nomads in a large trailer van with more funds (from the sale) than I have ... oh well .. win some, lose some, I guess.
combined engineering students do on average 22-28 hours a week
things certainly have changed .. that was our workload through until around Tuesday evening ... and we had to find room for drinking in our leisure time.