Can we get children?

[Notomi]

There should be a system where married couples can either have or adopt children. It would be so cool! it'd bring a whole new level in to the marriage system; having a family is an important part in a marriage.

I'm not certain about the details, but maybe they could act as retrainers when they get about a certain age. They could start off as infants and grow up to a certain point over time. Any other ideas would be great!

Edit: I can see where having children would cause an issue. I didn't intend it to be something inappropriate in the game; merely something like the two parents decide to have a kid and a little bit later, poof! They have a child! Thank you for all your feedback.
Now I'm leaning more towards adoption. I do see that a lot of you know that this could be turned upside-down and have a lot of issues with it, but I think if they made it right, so that those issues could not even come up, like dressing the child up (maybe kids could only use pre-made sets of clothing so that no issues could come from that), then the system could possibly work out.
I didn't consider what would happen in the case of a divorce because I never really anticipate such happenings, but that's why I asked for more suggestions to help polish the idea.

Thank you all for your feedback, especially do those of you who are being polite and understanding on this matter. And for those of you who keep saying this is not Sims, please rethink what you're saying and what that really means. As someone has posted in here, we buy houses in this game, and that's something that's in simulators. And I'm sure that's not the only thing.