I am not a native speaker, but once I tried to chew this problem over.
I read a book written by a British writer and, to my astonishment, I found such words as: "recognize", "fertilizers" or "plow" there. It's a funny thing, because the rules the writer was supposed to adhere to might seem to be not very difficult. I guess British people don't care about which "species" of English something is written in. When it comes to American pronunciation, it's another story :-)
As far as the American pronunciation is concerned, British people don't necessarily like listening to this accent... :-) American people, on the contrary, admire those who can speak British accent. I don't really know why it works in this way, but that is what I've heard about this issue.
A friend of mine told me about how these two kinds of pronunciation are perceived and we eventually claimed that we'd have to learn British accent and then go to the USA to make a good impression on American girls and pick them up. :D
Anyway, I don't believe someone might be prejudiced against me, because I don't speak the accent somebody likes! It would be totally crazy, wouldn't it?
That's my opinion :-)