HOO BOY, hello, sorry for the late reply - I can only speak for myself, but in my case it's been sifting through the stranger things and finding the handfuls of wonderful roleplaying communities and people with whom I can chat! Over the years I've found gloriously creative places to play and some of my most favorite characters I've met and made have come from stints in various Furcadia dreams!
I also do love the versatility - it's an aged platform and code, sure, but the fact that you can piece together little isometric hideaways out of anything and share it with everyone has always been appealing to me!