I think everyone so far has a point (except snorri!

) People do seem to be more willing to be angry, and yet more pent up at the same time, and there seems to be more to be angry about - stuff that maybe people were once willing to brush off as 'just life'. There's so much pressure to have stuff, so not being able to afford it is an opportunity for anger. Someone else being in your way, is a cause for anger. Someone else apparently getting the better of you, despite you spending all this money on stuff, more anger. Someone else having the nerve to tell you what to do...
Or is it that we are all getting old and grumpy and noticing it more? It's very hard to overcome nostalgia, I know.
I rmember when I was in Copenhagen for a week, all week I think I heard one or two car horns, and those were being used 'properly' - as a warning. Compare that to the amount of angry hooting you hear in that average town centre. People in some other countries seem to be much better at staying calm than us, but whether it's a new thing, I dunno.