Why do the Western men prefer bringing wives from the East?

My message is for you, dear men! I'd like to clear up one point. We all know that nowadays men from Western Europe and the USA prefer finding and bringing wives from the East. The women are mostly from Philippines, Thailand, Russia and Eastern Europe. Is it true that Slavic women and women from Philippines are considered to be competitors in the West? What's wrong with Western women? Why your eyes are looking at the East? Who has courage enough to explain you're welcome. Thanks.