We can find the answer to that thing from the game theory. If a person sacrifices something. That sacrifice can bring lots of glory to that person. The question in the heading is simple. Why some people will climb Mount Everest? And another person sits in an armchair and watches TV at home? Or why some people will go to schools that cause personal financial losses while somebody goes to the pub and works as a cleaner? Why somebody chooses things that are causing pain? Why do some people turn to war heroes serving in voluntary commando teams where training is extremely hard? And another will make only, what superior officers are saying. And why some people are going to evening school? Even if they would have a chance to sit in the pub and talk with their mates? Those solutions seem very different. But they are involving the same thing. The person makes sacrifices to earn something which seems meaningless. That means the person goes to make voluntarily the solution that seems wrong. Bu