My first 2 cars didn't have a/c, but once I had it is not an option anymore. Same for the EB, wouldn't be without one. You can live without it but it is nice coming down the Grapevine or I80 from Reno and not having to touch the brakes unless an idiot cuts you off. That's towing or empty. I use mine on the hiway all the time. In town it stays off most of the time. Yes, someone is likely to tell you your brake lights don't work, just smile and say thanks.