The universe is absolutely over-the-top, gigantically overblown and bombastic, awfully tacky with way too much testosterone. And thus, I love it to bits.
Orcs with machineguns, nuns with flamethrowers, elves with laser swords, 10 foot guys with rocket-rifles. W40K doesn't take it to 11, it takes to 9001 and beyond.
As for the games, I enjoy DoW2 every now and then, even though the matchmaking sucks big time. Stop pitting me, an inexperienced level 3 player, against level 48 players. It makes me loose. A lot. I would also love to play the tabletop version, but sadly there isn't anyone around to introduce me.