There are two more advantages of being nearsighted
that I can think of.
First of all, your vision at very close ranges is superior to that of a nonmyopic person, if you don't wear your glasses or contacts This is because your eyes have a stronger positive lens working-which is exactly what the glasses or contacts counteract. The superior short-range vision is useful for reading extremely fine print, like that found on banknotes, for instance, or for extremely fine work, like soldering.
Secondly, without your glasses, your eyes are focused at infinity pretty much all the time. This is in fact relaxing for your eye muscles, which can be a very pleasant experience. Before my myopia got really bad, I enjoyed reading without my glasses. Like that, I could read the book fine, and still, with my eyes relaxed, I would not have the problems associated with straining the eyes to look at objects that are close, like headaches and tiredness.