Pre-30 Experience

I'm leveling a new account, and I honestly have no idea how I survived it the previous two times. The MMR (if there is even such a thing pre-30) is all over the place, matching veteran players with absolute newcomers. Not only does this lead to very lopsided games, it also seems to encourage the worst kind of human behavior. I've read things in chat that I've NEVER read in my post-30 games -- which is completely absurd, given that there's absolutely nothing at stake. Pre-30 could be such a cool, relaxed thing -- but no, people have to turn it into a flaming, tryharding cock-contest. It's absolutely awful, and I pity any new player who has to go through this.