I don't mean to burst your bubble but you're looking at what these retiring villages are offering now. By the time you will need that sort of care, the type of support and care these retirement villages will be different, eligibility criteria and funding will be different and a lot of these places won't exist and will be replaced by something new. I'm not saying this to be gloomy just that the landscape of social care is always changing and it seems pointless to be so so fixated on something that may or not exist in about 40 years.
And aren't all older people orphans of some sort? I'd find it extremely rare to find someone of elderly age still with parents about and many people have already found their siblings have died off too.
Absolutely no one should have children so they won't be lonely or have someone to care for them when they are older. It's a terrible and enormous burden to place on children. People should have children because they want them. Not to held stave their own existential crises or as some sort of solution to their own anxiety.
As I said before, I really cannot emphasise the benefits of community and neighbours. From my own work, children and families make no difference to whether a person will be lonely when they are older and in so many cases, they create so much more many problems than they solve. I have a son but I 100% understand and agree with the reasons why people don't want them! You only have to read posts on here from adult children who state they won't help their own parents in old age unless they get help with childcare. Who call their retired parents selfish for wanting to go on holiday or spend their retirement how they please. There seems to be this expectation that once you have children, you must then spend the remainder of your life in absolute servitude for them, that even as your children grow older and have families of their own, the grandparents are still expected to put all their own health, wants and wishes aside.
No wonder people look at the above and think "no thanks". People should be absolutely free to make choices and life decisions with no judgement. As I mentioned before I know many family friends in their 60s and 70s with no children and some even with no nieces or nephews. And far from being lonely or sad, I actually think they have enormous peace and contentment from living a life that they can dedicate to themselves without burning themselves out providing care to children and grandchildren.