I'm inclined to agree with Arvan and Little Boy Lost. This is not a healthy attraction. It's an obsession built on a foundation of degrading Incubus myths that were originally designed to justify keeping human beings in chains, and to scare slave owners' wives out of having enough compassion to go off and join an abolitionist group.
Put 2 men beside each other: One is a pasty plantation owner who sits around counting his money, eating high fat food, drinking whiskey, and getting waited on all day. One works in the fields behind a plow. If he's lucky enough to have been ignored and not beaten (a small percentage of slaves were lucky enough to not get beaten as badly), lives on lean foods offset by what fish he can catch and what vegetables he can pinch, he'll look a damn sight better physically than the pasty little white man. And the pasty little white men knew this. They also knew that they were outnumbered by something like 2 to 1. History is full of examples of oppressed peoples rising up and overthrowing their overlords. The Privileged Class knew this, and designed these ugly 'Creep' and 'Hottentot' myths to avoid a violent uprising.
As someone from a barely dissimilar culture, looking in from the edge of the USA, I find the American Legacy of Slavery quite tragic. How sad that such a large segment of the American population is still viewed by many elites as a subclass of sluts and creeps who are little more useful than feral hogs. Most of the men on these postcards (yeah, they turned this sh!t into postcards!!) ended up like this bc they were accused of being unable to control their big black dicks around white women. Some of the accusations were proven false. Most of the accusations were never investigated at all:
http://withoutsanctuary.org/The things this woman says are as delusional as saying that she's attracted to her dog bc she believes he's really a werewolf who will turn into a good looking wildman if she humps him hard enough.
Black American men grow and learn and love just like any other American men, no matter what the colour of their skin. Some are good in bed, and some are not so good. Some are poets, some are mechanics, some are crackheads. Some are smarter than others. Some don't mind silly cracker women as long as they're getting good sex out of the deal. Some are deeply offended by being objectified as breeding studs.
Confused White Lady, if you try to act on this obsession of yours, I hope that you and your husband can find a decent, self-respecting man who you can treat with the courtesy that any human being deserves. I hope I'm wrong, but I'm not really convinced that you can respect the object of this fantasy, if you do find somebody who looks like he may be the one. If your fantasy guy's just in it for the sex, and doesn't care that you're condescending, great. But you might not be so lucky.
You should probably do some more work on deconstructing your racist beliefs before you approach another human being about this. Walking by black men and oggling their crotches doesn't count. Take a few classes in Critical Race Theory so you don't go out and embarass yourself.
*Edit: I was agreeing with Arvan about his views on sex obsessions as unhealthy. I just went back and read his views on 'race elitism' more carefully. I absolutely disagree with this nonsense. People become 'weak' bc they see evidence every day that being strong and talking back will get them killed or worse. This is the sad position that far too many African Americans are still in today.