Well, as bad as it seems, ultimately a spouse can't force their partner (regardless if it's male on female/female on male) to give them children. It's just that there's a lot of pressure/expectations to have them, so sooner or later they end up having at least one. So if you want to avoid any of that, just don't marry, it makes things somewhat "easier" in the long run. But you have to keep in mind that their perception is vastly different from ours (since it's a different world); they think of having offspring as a duty (to their families, to The Society), rather than just the result of wishing to be a parent. Something they must do, to put it bluntly.
That's why a lot of them are quite distant with their children and let the staff raise them (the Faerwald, the Crowfoot, the Rose, the Parsley, etc.), unlike Datura, who actually wanted to be a father, not just have an heir that would continue with the Nightshade line.
Sigh, I understand that everyone is sensitive about something/have a strong opinion about, but when I ask people to drop the subject repeatedly and I get ignored, it grates on my nerves. It literally burns me out and makes me lose interest in my own project.
There are several factors that will affect the MC short-term and in the long run regarding their overall health, and not just their height. And it's not only an aesthetic aspect.
I'll quote what @Lizzy asked, which is pretty much the same:
The whole situation is complicated, because even though Baladre/Leander are... "suitable" enough to carry the title, there are a lot of difficulties that can't just be ignored. As things are, Avaron can't be the Nightshade heir(ess), they don't even have a claim to it, so it's truly between the MC and their cousin.
Now, if the MC's cousin was the one to have title, the MC would be left with nothing; whatever Datura left them as their inheritance and what they could make for themselves (without connections), but money without name don't go very far. Not a lot of people would want (or would be allowed by their families) to marry the MC, and a union with thorn is not an option.
And well, the game is about the MC's helplessness/lack of control of their own life because of bigger circumstances, and what they are going to do (or are willing to) in order to change that. Unhappiness and social expectations are some of the main themes of the game, I can't write the game without them; it's like asking Jim to make ZE:SH without zombies because you don't like them.
I didn't say that I would remove them, just that I'm thinking about it The height issue has caused quite the... ah, uproar, even when I asked in several instances to drop the issue, and I don't feel very motivated to carry on with it.