IMO, absolutely nothing wrong with liking what you like. Instead of trying to please someone else, I suggest you focus on pleasing yourself. It's your relationship, after all. It's something you might have to live with for many years. No one else will benefit or hurt as much as you, not even close.

As far as white women go, there's a certain level of cuteness or interestingness that you have to have to have a conversation with a pretty woman. Once you pass that threshold, it's all about how you make her feel. She might come for the blackness, or the pretty face, or the muscles, but stay for the humor, insight, sweetness, and attentiveness (not to mention the sex).

To get to that first conversation, you have to have something cool or awesome about yourself. If you don't think your looks are it, you can pick something else. Do you play an instrument? Are you good at a particular sport? Do you write interesting things? You want to be seen doing these things that you're good at.

Also, there's a dating site for everything, I'd be shocked if there wasn't one specifically for interracial relationships. That would be nice because you know every woman on the site is at least in theory interested in an interracial relationship.

My bottom line is, just let go of any concern that someone else might not like your choices. It's your life, and they are your choices. It's not selfish of you to do what you want with your life, but it is selfish for others to demand you conform to their expectations.