Call me an 'elitist' but I like knowing that when I join a ladder all my games will at least be against players who understand the basics of the game,
Clearly you've never played against me on the 1v1 Ladder - it was only a month or two ago that I actually realised that making 6 picks is a nice idea :D
So you're basically saying the world would be better without humans.
Now you're cookin'. ;)
People are homeless because other people won't let them have a house, they want the land and material for themselves.
How many homeless people are you housing?
Incidentally, another use for the level system is the ego-boosting potential it provides. Some of us like to strut around and show off the fact that we've been playing tonnes of lotteries *ahem* playing the game a lot.