I have my fog lights and driving lights tied to my main headlights. If it is dark enough outside to need headlights, I want my fog lights or driving lights on as well.
My fog lights are tied to my low beams for one simple reason - SAFETY
I drive a lot at night and having the wide dispersion pattern a fog light puts out keeps the periphery lit up so that I have time to avoid deer, dogs, and suicidal people on the side of the road not to mention unsupervised childeren playing at night. Thankfully, I have avoided several close calls, involving mainly deer and dogs/wolves. Driving at normal speeds (which in town run from 40 to 55mph in my part of the world) with low beams, you run the risk of over running factory low beams and certainly cannot safely clear the median or shoulder of the average road. How many of us have had a deer or dog try to out run the head lights at 90degree angle to our path of travel?
I should also note, that I have a responsibility to ensure my fog lights are not blinding on coming traffic.
The same scenario holds true for driving lights tied to my high beams. Assuming you are driving the legal posted limit of 75mph, how many of us actually over run our factory headlights? Again, this is an issue of safety - either slow down or get better light farther out in front of you. Properly aimed and used, these driving lights do not pose a hazzard to oncoming traffic or the people on my side of the road.
Like you, I am annoyed at people you have improperly aimed HEADLIGHTS, and don't use or adjust the auxillary lighting properly. After nearly escaping a serious automobile accident, I became a firm beliver in high quality and adequate light.
Hitting a semi-truck spare (steel hub facing up) at 75mph can take your life, luckily God was with me that night. Hitting a cow, horse, wolf or, deer crossing ahead of you on a rural highway will at a minimum seriously damage your car but, could take your life and everyone riding with you.
Adequate light, properly aimed and used, can give you the time you need to avoid a potentially life threatening situation.