I agree in most cases but there are definitely cases it's handy being able to turn them off. it's handy for me to be able to turn them off anyway.

Prime example, my house is located on a heavily travelled road and across the road from my house is another road that is dead end but quite long with a lot of houses on it. I back my truck in rather than pulling in so it would be quite annoying for all those folks to be blinded by my headlights shining through their windshield as my truck warms up, meanwhile they're just trying to find a break in traffic to pull out. Turning my lights off while the vehicle is on alleviates that issue.