So, I just got back from driving half way across the country a couple weeks ago. We also recently had a snow storm of sorts in my area, and my wife said this during the storm:
People just aren't turning off their high beams.
Even on divided highway, where the only barrier between directions of traffic were the concrete barriers, people just aren't dimming their high beams. It wasn't everyone, but I'll bet it was close to 30%. I also had several people come up behind me on the highway with high beams on, in traffic. Even with (legal) window tint and the rear view mirror flipped up, it was very distracting.
This was much more rampant near home than it was elsewhere. I noticed it this year a lot more than even the cheap HID kits.
But, I do have a question. What's the typical accepted distance before high beams become too bright to other cars? What about separation of highway, the divided highway with significant medians? Is that enough separation to avoid distracting other drivers?