I was afraid this would lead to another racial mudslinging. I am happy with the standard of the discussion here. I have few observations to make. It is not just in Qatar that I have noticed this Asian woman/western man thing. If you ever happened to travel out of manila international airport, this will be the first thing that will strike you, mixed marriage couples waiting to leave to different countries in gulf, UK, Canada etc. It is a nice feeling to see that people of different races can live tighter as families, no matter what some people may think about racial purity. I have discussed this with some mixed marriage couples and draw following observation.

There are too many marriageable Asian girls available,

As a culture, Asians have no problem in marrying outside their clan

Asian women find their men too irresponsible and immature.

Most of these western men are too old and less attractive to find partners in their home country.

Asian women have strong family values that are fast disappearing in western women.

Asian women look clean, fresh and attractive, compared to western ones.

Asian women are desperate and are too willing to go out with the first western mail they meet.

Asian women just need a sugar daddy to care of them.

Asian mixed couple are noticeable because they look different. there must be equal number of mixed couple in other races too.

I do not know what is the real reason, may be a mix of all these. I only wish they stay together for ever and the affairs are not casual and does not end with an exist from immigration counter at the airport