I drive a B2300 (old Ranger sized pickup) and headlight glare is fucking unbearable. Most modern SUVs and pickups have their lights above the bed of my truck and shine directly into my rear window, usually bright enough to drown out my dash lights. I can't imagine that the experience is much better for car drivers who get those lights at eye level.

I have taken to dropping down to 1 under the speed limit when I get truck/suv tailgating me with insane lights because they are drivers most likely to get impatient and pass if you aren't going at least 10 over.