It's because the game is so incredibly revolutionary on every level at once. I haven't played the game and I'm going apeshit over it, because I don't care about

It's because the game is so incredibly revolutionary on every level at once. I haven't played the game and I'm going apeshit over it, because I don't care about the things you mentioned, I want to mess with every single editor and travel out to the universe and see every neat thing that every single player has made. And a Brian Eno-programmed soundtrack is pretty neat too. Think of it like the Sims - easy gameplay but incredibly addictive - combined with Legos.