Just like to throw my thoughts into the mix. Having just returned from Hong Kong (Where I met my wife who is five years younger than me), There are many european/asian relationships. Most of them between older europeans and younger filipinas. Sadly quiet a few of them develop from relationships between employers and domestic helpers. so there are more than a few divorces created because of this. I did notice that in nearly every case the Filipina was always younger than the male. The point I'm trying to make is, it is more than acceptable in in Hong Kong and as most people here seem to agree that if you are happy then it doesn't matter, but I can't help feeling that some of those 20 - 30 something girls are taking out a short term insurance policy. After all what is ten years of your life looking after an older guy if, when he dies he will leave you well catered for to enjoy the rest of your life. That said I personally could never have a relationship with any women who was old enough to be my daughter and in some cases granddaughter.
