Outcomes aren't great for old folks who go into homes without having someone on the outside looking out for them. I don't know if you've seen the recent stories but a little cognitive issues and you'll be signing away everything you've earned to the home itself or one of it's employees. It's quite common.
Yeah but that was the whole point. You're telling someone who already doesn't want kids why they should want kids, but you're giving them only one reason. If they do so, it will only be for that reason
Not necessarily. Suppose that person has multiple reasons to want kids and multiple reasons to not want kids. They analyze the pros and cons and figure that the cons slightly outweigh the pros so they choose not to have children.
If later they learn something unpleasant about nursing homes, or pension plans, or something else relevant to their expected quality of life at their old age, then that might tip the scale towards having children, even though it is only one of many reasons.
The last reason that tipped the scales towards a decision is not necessarily the only one or even the most important.