I have a 40" xmiter with a custom flood/projector mix. The LED bar is controlled with an OEM aux light dash switch to energize the system, then the LED bar comes on/off with the high-beams using the usual switch on the steering column.
I would suggest it is easy to over do it (see first sentence above).
Even if driving alone at night on deserted roads, today's roads have a lot of reflective signs, posts, lines on the road, markers, barriers, etc etc. Sometimes the light reflected back from all this safety crap can almost be blinding in-of-itself.
Much to my amazement, I have found that 99.9999 percent of the time I use my high-beams, I am not driving Baja, at 120mph, in the middle of the desert. All that being said, I do enjoy taking the lonely way home at night, just to melt snow off the trees !!!!