I am kind of like the OP, if I am in a vehicle then I am driving. There are a few guys that I will ride with and have no problem. I think its due to my job and the number of people and vehicles I deal with along with the number of close calls I have had over the years due to others driving abilities. It's no big deal for me to run 13 hours alone or with the family in the rig driving the whole way.
Every once in a while, like a couple other posts stated, I get to thinking what happens if I get sick or hurt and can't drive while camping? Sure suck for the wife to have her first time towing be when I am dying because I'm sure I would have to be just about dead before I let her tow. I guess I really need to get her some time behind the wheel with the trailer chasing her around. Wife has said she would like to tow so all I have to do is give up the wheel and hope for the best. I know its kind of sad what's even worse is I am a trailer towing trainer as well as a defensive driving instructor, driver examiner and ATV trainer for my employer so I know how to train drivers.