Hey! I love MUDs, been playing since probably 2007 when I was in middle school. I've usually stuck around IRE's games (Achaea, Aetolia etc.) but also have enjoyed others such as Armageddon.
They've always been a reliable escape for me and only recently have I actually pulled myself away from them, but I thoroughly enjoyed building up my own character and a life of their own through roleplaying. It's sad to not have experienced MUDs in their heyday but I'm happy that a decent amount of people still play enough for some of these games to still be considered 'active'. Long nights and days have been spent totally immersed in their settings, and their influence on me as a person is something I have to acknowledge.