Along with being the greatest form of entertainment possible, you can gain confidence, treat physchological problems, face your fears, rehearse real life situations, use it to become more creative, to gain awareness. People only act like they don't want to try because they think that others might think they are different (mankinds biggest fear). If they even had a taste of the ultimate power they would be convinced and start trying it by themselves.
No one can tell me that they haven't daydreamed about doing something awesome, no one.