I find it frustrating that most people spend a quarter of their life just going to school and you essentially can't do anything that useful until you are at least 25 or so
As much as listening to lectures for 20 years can be tedious, schools are a compression (time) and expansion (breadth) of the discoveries we would make on our own, and are therefore simply a way to get people up to speed with the current world. The real learning starts after school is out.