On motorways/fast roads I put my sidelights on at daytime. Unless it's so bright that you can't even tell their on - but in this country that's rare! I think it's a good idea if it helps people see you.
On the other hand, I frigging hate people who put all manner of lights on when a slight mist descends. Around packed towns/sitting in traffic, all you do is dazzle the poor person behind you.
Recently when it was a bit foggy, one person was driving toward me on a two-way residential street with main beam and fog lights on. I couldn't see a thing. Nothing. Nada. The lights just made everything white for me. :bang:
Off topic rant over
But normal Headlights shouldn't dazzle! But I does wind me up, these poeple who always drive with the front fog lamps on! I always flash them!
\/ \/ \/ \/ \/ \/ And I have bright lights to flash them with! \/ \/ \/ \/ \/ \/