Asking people the benefits of the forum they are registered on is like asking why people chose a particular profession. The answer is simple: it's better here. You will probably get the same answer on another forum. Therefore, I will not repeat all the benefits described by other people; the choice is always up to the user. And the OP most likely came here for the merit that would help him participate in the bounty.

Counter question to the OP: Why are you here?