The Problem With TeamBuilder Matchmaking Adjustment

I don't know if this is just me, but whenever I play games with the matchmaking adjustment active, it feels like I'm playing with people who have never even been on the Rift before. I was practicing Leona the other night to take to ranked, and my ADC refused to go in even when I had the enemy stunned, or even when I ulted. Everyone just seems so derpy when in the matchmaking adjustment that it's so hard to do much of anything to carry.

Many, many times this happens in many games playing many different champions. Even if you weren't trying a champion for the first time, you could have played them a few times in ARAM and gotten the feel for them and don't need the adjustment. It could just be that I pick up on champion's kits fast, but it's really sad to see happen.

My suggested solution to this is the following: There should be an option to turn off the matchmaking adjustment for TeamBuilder when you want to. If you've already played the champion elsewhere, and you know how they work and how they feel to play, you shouldn't need it. So why should it be forced on you? Or if you're like me and catch onto playing champions fast and feel confident, you should be able to turn it off.

Edit: I didn't mean matchmaking in general like people are seeming to take it. I'm talking about the adjustment when you play a "new champion" for the first few times in TeamBuilder that puts you with other people playing a "new champion".