This is such a long and involved topic. It involves love, preference, self-hatred, 'white is right' mentality, 'other is exotic' mentality, stereotypes perceived to be truths. Posting on MN will never give a complete and full picture.
I will say I dated outside my race in the 90s (last time I was single). My preference was (and is) White, blonde, with brown eyes, with fairly soft features but tall build wide shoulders. I'm thinking right now Thor (with hair). Did I mention the hair? it had to be long. Long hair on head no chest or back hair.
Anyhoo, my husband, black, bald, hairy. The only thing that fit looks-wise is his brown eyes and build.
Having preferences is one thing. sticking rigidly to them is limiting. Though to a certain degree (in-laws excluded) dating someone with the same background makes life a little more simple.
I could never (I think) be with someone who wouldn't date outside of their race. Not seeing yourself within an inter-racial relationship and point blank refusing on that basis is two different things.
We both work, we earn well (according to a recent mumsnet thread) and have DC. My eldest is 15, will tell me who he likes. My criteria for a DIL is simply that she loves him and wants to partner up and look after him, whilst he does the same for her.
We live in a fairly multicultural area. But he has liked one black girl. all the others are white looking from various backgrounds. That is his type. I only ask him to question himself why? Is it because that is what is subconsciously ingrained in our culture as being the best or just because he likes them. I have mentioned that it is important he understands his reasons. He thinks I have a hang up about these things. Maybe I do because I know what I went through from both sides, having been in inter-racial relationships.
That turned long. Overall it's a pity anyone still has to have the conversation.