Okay, let me address this for you.
"I don't find X people attractive" -- cool story bro, I mean, you probably haven't seen many but okay.
"I will never date X" -- racist.
Why? People there are people here who have their preferences which is despite physical attraction.
For example, my Cuban colleague, who is mulatto (looks like my brother actually) -- dark father, white mother. His grandmother on his mother's side said to him "don't marry a black girl, it'll degrade the race".
And for what reason is that? It isn't merely because of the skin colour, it's everything else that comes with it. The racist BS that comes with it.
Which comes to the whole "I'd date X but I'd only marry Y" which is extremely prevalent.
Because if this were about preferences, no one lists all the things they find unattractive. Like, "I don't like too many moles, people with this feature, people who are short, people who are (dot dot dot)". So why is there ever a need to just say "I don't like X race, full stop." It isn't about attraction, it's all the other prejudice shit where "preferences" just boils down to "I don't like those people".
Especially when we get into how "black" is some broad as fuck term, which includes light-skin girls and yet there are guys who won't date them but will salivate over some bed-tanned white girl with her eyebrows on fleek.
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SMH, the lot of you.