My only real problem with LED lights is that they are frequently much brighter than they actually need to be, i.e. my LED headlights seem to piss off other drivers.
That's actually partly once again due to the color spectrum. The bluer the LED, the brighter it appears to the human eye, which is why cheap flashlights and "High power super LED" car headlights are never warm-white. Unfortunately, the colder (bluer) the light, the more painful it is for oncoming traffic in the relative darkness.
The fact that they're also overly bright doesn't help things, of course.
I'm still driving one of the last generations that came with actual halogen headlights and even for me as the driver it's a much nicer experience - while dimmer than LED, the color reproduction is better, depth perception at high speed (I live in Germany) feels more in line with daylight (this is particularly jarring in an LED-equipped rental car, IMO) and the more natural spill pattern (i.e. a slight hotspot in front of the car and gradual falloff to the sides) from the single light source with a reflector means roadsigns don't blind me at night.
When (well-implemented!) adaptive LED headlights with warm color temperatures and zero PWM are the standard on something like a Dacia Sandero I'll take another look. Until then, halogen baby!