Uh oh.........I drive top down window up probably 50% of the time! It works well for me for the same reasons Gregg stated. Plus, makes it a little quieter in the cock pit at high speeds. I'm guessing that windows up for me, has a lot to do with my attire and where I'm going as well. My hair is a little longer, so with top down I often wear a baseball style cap. When the cap comes off, the hair is still formed in the shape of the cap
So, if I happen to be going to an affair or business meeting and I don't want to look as if I've been on the golf course playing hookie, it top down windows up all the way. But, if it's my day off and I'm just bumming around then everything's down.
Here in the bay area, top down windows up is normal, lots of people drive that way. It's a little cooler here, so I suspect that's also a reason why.
BTW, with wifey in the car it's alway's windows up cause even with the windstop, her hair flys around.
What irks me is when I get all irked up over things that aren't worth getting irked over
Now, posing and driving like an A$$ just to impress is a totally irkable offense!