So if your leaving, or considering leaving, answer these questions.
Is the forum bringing you happiness?
Is it influencing on your code?
Do many people look up to you?
Do you have many friends on the forum?
Do you still have time for life?
Are you happy?
If your answer to many of these questions is yes, then I'd think a little more about leaving. If you have lots of no's, then leaving is completely your choice. But of course, everything is up to you. :)