I stay because I am interested in watching the progress of this game. I enjoy this franchise and I hope this game will be very successful in the future.
I stay here because it's fun to see someone argue over something that doesn't need any argument over, yet it happens.
I jumped in for the game (which is a dream filled with glorious combat come true) and I stay for the game, the community, and the Devs (also Toes' Power of Cute compels me). Bonus points for seeing and hearing about how the Eternal Crusade develops.
I'm here because I love the setting, I love the premise of this game and I love the sense of community that we've garnered here. Used to be waaay more prevalent though, now I just peek my head in every couple weeks or so to say hi, check in with the family. The big, nasty, Chaos family.