As the title says, I'm wondering what out of everything in the MGE as a work appeals the most to you guys. Is it a specific Mamono? The potential for writing fanfic? The creative designs & worldbuilding? Just plain horniness?
For me, believe it or not, it's the feelgood setting and escapist fantasy part. Yeah, what initially drew me in was my fetish for cute monster girls, but what makes me stay is the wholesemness of it all.
In a RL world where all fiction has to be so grimdark and depressing, the MGE is surprisingly uplifting and sweet. There, you can always find a girl who'll truly love you for whoever you are, for as long as the world lives, and you can spend your life just being happy in a wide fantasy world with lots to explore and experience. As KC said, it's a "love conquers all" setting with always happy endings.