I am not downvoting this comment of yours, but here's a piece of advice: attacking the whole forum over a single downvote is probably the best way to ensure you'll get more downvotes.

If you want to get fewer downvotes, best way possible is to complain less about the occasional downvotes you will get. All that a downvote means is that one person out of the hundreds that visit the site didn't like your comment. But when you attack a whole community over what a single member of it did, well... that'll cause more people to think that such an attack merits a few more downvotes.