I have been in Thailand only a short time. I have seen foriegn men being rude to Thai girls and it is sad to see. men from some countries look to be worse than others, I may be wrong.
I am an Englishman and still have certain values - being polite is one of them. I like to open doors for a lady and things like that. In some countries (china is a good example) a man would never hold a door open for a lady.