Is it normal I feel guilty for my sexual attractions?

Your "friend" is an asshole. He's not even worth your time. Forget that fool!

Everyone has a preference. Very rarely, that is if it is even possible, can people help what it is that attracts them. For instance, I'm a melting pot of ethnicities. As far as I know, it currently encompasses: Cree Indian (Native American - My father's father's father was a full blooded chieftain, who ended up marrying a Caucasian woman.), Caucasian (As far as I know, it is only on my fathers side.), African, Latino, and possibly Asian.

I am mainly attracted to Caucasians and Asians. While I can see beauty in other ethnicities, it mainly seems to be for aesthetics. This doesn't mean that I am a brainwashed racist. All it means is that I have preferences.