For me at least, I like the size of the rider's seat. I never, ever carry a passenger, so it's usually empty, or sometimes has a duffle bag fastened back there.
I like the fact that the back of my butt has something to support against it, which helps keep be back off the tank when riding long distances. I'm not exactly a small guy (I ride in a size 48 Aerostitch) and have plenty of space.
Jeff