It looks cool to run with your fog lamps on?Do you use your fog lights with your low beams while driving at night? Do you think people just do this because it "looks cool"? What do you do with your car?
I doubt this is true since as mentioned they point at the ground and cast just enough light to see the edge of the road and fill in the dark spot between the car and the low beams I don't think they cast enough light to make your pupils get smaller.For people making the more visibility argument, the only valid argument I've heard against having fog lights on is that on a dark road, having more light directly in front of you (closer to the car.. with your fog lights) is actually bad as your pupils will constrict because of the brighter light right there. This makes it harder to see/adjust to 'night vision' as you would if you only had low beams on. Your pupils will get bigger as they do in the dark, so you can see more of the area in front of you.
Not sure if I explained it well enough but there it is. Of course this probably doesn't matter in urban areas where there are lots of street lights and stuff.