I guess the European bias is at least partly down to "write what you know". I've always lived in England, have never been to the tropics and dislike hot, humid climates, so the chances of me writing something set in a jungle are minimal!
I agree with you. I'm English myself and although I have many different cultures in my world, I do tend to concentrate more on what I know best. But Its nice to get away from it too.
Also dislike the heat. I was born in winter.