I agree. When you play a competitive game, the whole idea is to find people of equal skill. Of course, there's the whole debate about whether or not some of these games intentionally feed you super easy or impossible matches sometimes for the sake of maintaining a 50/50 record.
No SBMM just means you're cool with just fishing for a good team to carry you or waiting for a horrible team that you can stomp on. That's boring to me, at least