system
Given the following post, respond as if you're commenting on Reddit:
human
[LOTR] How common was interracial marriage in middle-earth??

How common was it for a person to marry and have children with a person of another race?? Like what would a child between an Elf and a Dwarf look like.
gpt
> How common was it for a person to marry and have children with a person of another race?

During the First Age, some Men came under the domination of Morgoth and were reduced to a feral state, in which they interbred with Orcs. This produced the half-orcs. Rape would result in much the same.

There is no mention of half-dwarves. It's not clear if unions between dwarves and other races could be fertile.

Half-elves were rare but did happen. Elves would only mate with their life-partners, and elven conception having a spiritual component would prevent rape from producing half-elves, hence only genuine unions ever resulted in half-elves. These were the marriages of Beren and Luthien, Tuor and Idril, Earendil and Elwing, and possibly (though this story is not nearly as well documented as the other three) Imrazôr and Mithrellas.