Sjoerd, I am sorry to see you so upset.
I think it was your initial tone that may have upset some people, your rather direct and perhaps a little undermining aproach towards my own comments did make my hackles rise a little as you can see from my own earlier reply. There are cultural differences which may make a comment seem perfectly reasonable in one place but not another. Perhaps if we were all a little gentler and more supportive in our comments it might help. I am sorry to see that you think the typical Englishman is arrogant; I can assure you that there are good and bad ones just as there are all over the world! Some of my own closest friends are Dutch as well as from the UK. The fact that we are all different makes life interesting!
Best wishes and hope your day gets better.