I was in your shoes not too long ago, and I shared the same opinion on match making. After taking a shot in the dark and looking through the forums, I finally got into a raid group. Now I have people inviting me to raids constantly. Matchmaking is a bad idea for raids. You have to be able to communicate with your teammates, and you don't want to run into people that are just looking for a particular item. In your case this would be a raid helmet. Imagine being in matchmaking and someone gets the item they are looking for early on drops. You are short a member at that point. My suggestion is to use the forums and join a group of people raiding.