If you don't take it so seriously then why are you complaining about people taking it so seriously? Seems to me you must take it seriously too if you care to complain about others doing so and why does it matter to you? It's a game with an objective, of course it's going to have people trying to get higher in the game, it's like sport, you should train and play seriously if your at a level where you play against other people or teams in a ranking system. Just because some people take it seriously doesn't mean you have to. Play the game how you choose, and they will choose how they want to play.
Why are you making an useless thread? Why you actually think you're going to get an answer? Why do you think you want to know? Do you even lift? Oh, sorry, I thought this was a thread about who can come up with the most idiotic question.