Yes, exactly the same reason for those two. While it might work with the story, I'm just not into it, and thus it would probably turn out subpar - I'm lacking the subjective understanding of what actually makes these things desirable, and I don't think reading up on something like that can substitute actual, felt desire/attraction.
You're right, of course. I assume that's a big part of it for a lot of people - or even the whole reason.
It doesn't change anything, though, because it clashes with my personal views regarding pregnancy
What I will say is that there is a chance for pregnancy in the story's epilogue. At least one of the girls (no details; don't wanna spoiler) lends herself well to the role of a mother, so I may make an exception for her/them. But as I said, it's not guaranteed.