One of the more ridiculous modern myths is that there is nothing wrong the brightness of today's headlights and that it's just a matter of how they're aimed.
While the aiming of bulbs is important, there are definitely some bulbs on the market that are way too damned bright.
I'm driving in full daylight, with glasses that tint automatically, and the blue white standard headlights of a car behind me were bright enough to hurt my eyes.
And it was a low slung compact.