Maybe the ones in modern cars are brighter than mine, I don't know, mine use the same type of bulb as the brake lights and all cars have those.
Yes, but your brake lights aren't on permanently. Worst case, you sit at lights with your foot on the brake (and, yes, that can be annoying to the following driver), but it's very temporary.
I don't know if you get heavy fog where you are but we do from time to time and it can be quite difficult to see the tail lights on a car ahead of you.
Yep, last night was very foggy, enough to make me slow down considerably. No problem detecting rear lights way before I would have run into the back, though - you should drive so you can stop in the distance you can see to be clear, and if that's 4' in front of your bumper then a car having normal lights will be quite some distance beyond that.
Worse when it's patchy fog. Then you get either wall of red in the dense stuff then unfiltered lasers in your eyes in the clear. Wouldn't be a problem if drivers would think "Oh, that car following sure knows I am here, I don't need the force field turned on now".
I don't recall ever being in a situation where I'm blinded right behind a car
Maybe you have sensible drivers over there! But even lights that are not ultra-bright drown out everything else. That's why you don't drive on main beam in fog (though I'm sure some probably do).