I have some things for you to read.
First, please read about how Ashley Miller was disowned by her father for being in love with a black man.
Then, please read this post by Ed Brayton in response, which describes how a friend of his came out to his parents as gay, with rather unexpected results.
Then, consider this:
Don't have children.
If there is a “type” that you would disown your adult child for being in love with, do that child and the rest of the world a favor and don’t reproduce.
Because you never know. You never know.
This crazy thing happens when people grow up, called developing a mind of their own. Even if they don’t manage to fall in love with precisely the “wrong” kind of person according to your standards, chances are extremely good that they will turn out to be non-bigots, or at least to reject the kind of bigotry you hold dear. And then your own children will be embarrassed of you. Not because you drove them to Homecoming in a pink smart car, but because they’ve grown as a person so much more than you managed to. And outgrowing your parents physically is normal, but outgrowing them in love and acceptance is painful.
Don't set yourself up for heartbreak-- your own and your adult daughter or son's-- by deciding to create a family, operating under the illusion that you'll raise them "right" (i.e., inheriting your prejudices) so that they would never choose such a thing. That they will turn out just like you, and not better than you.
Don't count on it.