I use the view last unread post button, so I like viewing the threads in chronological order so I scroll down, not up.
I also don't use the smilies very often because that requires using the mouse, and I prefer to keep my fingers typing at 75WPM on the keyboard.
But vBulletin is really powerful software. There's a lot of features. I was really amazed at all the new features it added when I became a mod.