Well it's completely different band now, and the other members wrote the songs, not Ozzy
Anyway, Sabbath reigned supreme at the height of prog rock, so they could get away with dragging it out a bit. No one would appreciate a 6 song album these days.
Sorry dude, must be all this sweet leaf I've been doing *cough* Am I going insane? I've really gotta like, chill out with some housework, I'm gonna go and iron...man