MyDepressionList

Write something else, something that isn't just a burden, but a pleasant bonus.

If I mentioned the term "single parent" above, then it should be obvious that I don't consider that a "pleasant bonus."
Actually, if two people love each other and the partner doesn't hide the fact that they have children from a previous relationship (or an unknown relationship – how many single mothers are there in our country who can't identify the father from a list of 10+ men?), then why not? Although, perhaps in the case of women who don't even know who they got pregnant by, it's better to avoid it altogether.
And if we take as an example a girl or a guy (men can also be single fathers, by the way, and the wife doesn't even have to die in the process, lol), with normal personality and parenting traits. And the reason for the divorce – as an option – is that they realized that their personalities don't match (some people need a few years to figure this out, while others need a lifetime, lol). And this potential single parent meets a perfectly good person, who, surprisingly, is okay with the single parent's personality and isn't particularly bothered by the fact that they have a child, because they are genuinely comfortable with this single parent (I mean psychological comfort, not moving in and freeloading). So, if everyone is happy and no one is cheating, and the child is also growing up to be a well-adjusted person in such comfortable conditions, then why not?
In short, I'm saying that everyone chooses for themselves whether to agree to a partner with a "baggage" or not. But it doesn't smell like any sexual deviance. At most, it's a desire to take on extra trouble for the sake of a loved one.

Added 5 minutes later

MentIf we spend an hour trying on shoes in a supermarket, checking if they're comfortable, if they pinch anywhere, if the heel rubs, then it's even more important here.

You have interesting analogies.As strange as it may seem, there is indeed a grain of truth in Ment's words. You need to approach the choice of a person with whom you plan to spend most of your life and, possibly, raise children together, very thoughtfully and consciously.
Otherwise, you first marry someone who happens to be available, and then there are scandals, cheating, and cries of: "I wasted the best years of my life on you!!11" – and then you end up with a single parent... Just like with bad shoes that rub!