It looks like you're new here. If you want to get involved, click one of these buttons!
My favorite MMO is the now dead City of Heroes. I'm a huge altaholic and CoH let me go absolutely nuts with pretty much anything I could think of. I was part of my first guild there and I made friends who I still talk to today. Just flying around and exploring the complex maps was a lot of fun.
It's extra special to me because the supergroup I was part of eventually led me to meeting the woman I would marry. The game changed a lot over the years, but it always remained my go to MMO. Sure, I played WoW and others, but City of Heroes was really something special.