It's all the more powerful because of its rarity.
However, sodomy is just ugly and there's no getting around it. You are repelled by the description because you are presumably a normal and decent person. I recognize that. But saying, for instance, "anal intercourse" is itself misleading, because it makes it seem like an actual kind of intercourse, some sort of parallel with true marital inercourse, which it is not: not even when it involved male and female. It's not even analogous, it's more like a parody. Clinical words don't convey the perverse wretchedness of it all.
It doesn disturb me, though, if I have offended you. Please forgive me.