I found MM about 2 years ago during the MG era and have stuck around through the changes. I really have to say the changes that have been made over the time I've been playing have been thoughtful and really added to the game. Even though a few players can be annoying at times, the imms and other staff do their best to make it an open and enjoyable environment for everyone. Any time I've had any problems I've found an imm, a guide, or another player who was willing to help me out.
Basically I think Materia Magica is a great game and that it has a lot to offer any player who is willing to put a little time and effort into it. Its not easy but it is addictive (seems like the most challenging games are).
So if you want to have fun and meet some real characters visit Materia Magica. Just be prepared for the desire to stay logged in 24/7 that will follow!