Why do people flash their high beams and drive like idiots around me?

I drive a boring base 2015 Honda Civic and commute for a couple hours a day and just tonight at least four cars flashed their high beams at me when there wasn't a cop or had my high beams on. Two different cars actually put them on and stayed behind me in the right lane when they easily could have passed. I just put on cruise control and try to relax the entire trip because it's so stressful. Should I just avoid the highways altogether even if it takes a little longer or am I being paranoid?

It is very unusual that a driver on the highway would stay behind you with brights on. It's too easy to go around you.

Are you sure that something on your car isn't falling off or something?

Maybe you didn't have your lights on. Maybe it looked like you didn't have your lights on.

It might be just your headlights for some reason blazer's lights point forward just like the brights (although still dimmer than brights)