I think drivers in Europe must be better trained than in Australia - I don't think I've ever encountered someone who didn't dip their lights! I grew up in the country so am very used to having full beams on though don't use them often now I'm in a suburb.
One should always dip, when another car is coming....I do.
I was taught it can in some cases blind the other driver for a few seconds, so best to always do what is right...and not what some drivers feel is their right, to have the blooming things on full !!
It gets me quite upset, and the offenders are when I see, men.!
I drive with my full lights when I need to but I always dip my headlights when a car comes towards me on the other side or if I am behind another car. I really don't like it when people keep their full headlights on when driving behind me - it is so blinding
I only drive on high beam when necessary. I've also had the problem of rude, inconsiderate drivers behind me who refuse to return to normal beam so I do what a driving instructor once told me to do, I angle my rear vision mirror so their beam shines right back at them. That usually does the trick.
I only drive with the high beams on if nobody else is on the road and there is heavy fog or rain. Otherwise, I don't need to as my headlights are sufficiently powerful. In fact, people often flash me because they think I have my high beams on when they are off.