One of the hallmarks of a good Gamemaster is to learn to say Yes as often as you can to your players. If you say "yes," they get to do things that they want, and they have fun. If you learn to say "Yes, but" that's when games get really fun. Is it possible to take this too far? Maybe. Gamemastering is hard, but everyone should give it a shot. I think if you've run a game at least once, it makes you a better player.