I'm with you there. I haven't faced many mono decks, but the one I did fight was no more difficult to defeat than any other I've faced. As mentioned, a true mono deck is stupid (you can't block whatever color you've gone mono on) and easy to beat. An almost-mono deck is just another strategy to me, and personally I think it's inferior to a two-color deck. So I've got no problem with them, I was just curious how much of the meta they currently are.