Everything you say about the IMDB forums is true. That said, a long time ago, I discovered a forum on some forgotten page, with a small population of extremely cool people. This was at a point in my life when my daily schedule consisted of: Get up, go to school, come home, go on the internet, go to bed, repeat. And so for a period of about a year these people were literally my only friends.
They helped me through some tough times, and gradually I grew more confident, and made some real life friends, but continued to frequent this board due to my love for these people I had never met. Sadly, over the years they stopped visiting the board one-by-one, and it's now a shadow of what it once was. Dead, but never forgotten.
So say what you want about IMDB. You'll be right, but I could never hate those forums because of how much this one little page means to me.