My Dad once told me the story of how he was driving home from his job in Mill Hill in a pea-souper in the early 1960's and being surprised, when he pulled onto his driveway, to see the line of cars behind him whose drivers, unable to see properly in the fog, had followed him home on the assumption that he was going where they wanted to go!
In the past my regular cars, with halogen lights, always seemed fine at the time, but when I moved to the Scottish Highlands (35 miles home from town, no streetlights, not much in the way of effective road markings, but plenty of deer) lighting suddenly became a far more important issue. I had a Nissan 200SX at that time and felt that the lights could be better, so I uprated them to a Phillips version with allegedy far brighter output, but didn't see much improvement.
My next car was a Mazda6 MPS, with xenon headlights!! It turned out that the dipped beam bulbs were, indeed, xenon, but the high beam ones were just halogen - crazy! (Incidentally, I've never found front foglights to be of any use whatsoever, although you can be done if they don't function).
Then came the Superb,with bi-xenons! Better, but still not as good as I'd like unless it's a very clear, very dark night.
When it comes to over-bright headlights, I have a problem with it too (although bear in mind that in almost all cases people don't choose their new car on the basis of how overbright the lights are), but apparently older eyes aren't as good with bright things in the dark. But "they" are always telling us that we are a "rapidly-ageing population" - go figure, as they say.
My big problem is with ultra-reflective road signs. I once almost hit a huge stag in the road because I was looking away to avoid being completely dazzled by a reflective sign warning about deer! It would be interesting to know if these fancy new pixellated LED matrix headlights woud prevent that problem by not lighting up those signs, but then you wouldn't see the signs you needed to see. It would be too much to expect them to make signs less blindingly reflective in the first place - there is no doubt an EU regulation covering that.
I know - too long, and with no useful information. I'll bet you're all glad I don't post very often.