Very simple.. I don't find them attractive (non-whites) But anyway white girls is interesting to experiment with blacks,.. They're convinced that they have larger penises and inormous sexual energy. The whole thing(lie) is highly promoted by media, the basic idea of globalized world is to have large number of mixed children and couples. In the most cases we're talking about a group of teenage girls which are blinded by this media. America even prohibitet results of study in which was proved that blacks are less inteligent. There's a much written about that I personally suggest:
Penis size@Everything2.com Newsvine - Myth that black men have larger penises