I used to wonder about that too. Not just because of STDs like herpes and HIV, but you know some guys are eating other guy's splooge!
Plus I've had quite a few gfs and been married (more than once;-) and have only had three DELICIOUS women, a Caucasian, Cuban, and Filipino, but have been with every race and many Asians, especially chinese. So if I could find another DELICIOUS woman, I'd likely marry her (too dumb to learn from my mistakes I guess;-), but not if she was a hooker.