There are many times when I just want the fan on, or a light amount of A/C, or a light amount of heating. ACC gives no good way of getting this. You might set it for 72 and find it's just the fan, but later on it suddenly turns the A/C on, or even the heater. And what's the difference between 72 and 73? I don't know or care what the Farenheit degree reading is, I just know I want fan, A/C, or heat. Also I often like a gentle breeze blowing on me, but some ACC systems regulate fan speed and there's often not a good way of getting it the way I want.

Basically, I've driven cars with automatic climate control, and I tend to constantly be adjusting it and fidgeting with it because it keeps turning A/C on or off or altering fan speed. With manual climate control, on the other hand, I never need to tamper with it -- I set it when I get in the car and that's it. Sometimes I decide I'm a bit too hot or too cool, in which case I adjust it once and that's that.