This problem can still be solved satisfactorily, if the children make small achievements outside and have their own house. You can just take it away and live with your parents after retirement. If the lover is used to the world of two people, he can also buy or rent a small square meter house for his parents in his own community, so that the old couple can live alone. We often walk around to visit them in our spare time, but this solution can only be implemented after the old people are familiar with the city, otherwise they will be lonely in a strange environment.
If parents are reluctant to leave their hometown, their children can't leave their distant jobs. I usually need to talk to my parents on the phone. Now the network is very developed, and we spend more than ten minutes video calling with our parents every day, as if we were all together. Parents are old and must come to them. If they are busy at work, they can hire people to take care of their food, clothing, housing and transportation, and don't be afraid to spend money. Old people must always have someone around to avoid some unexpected diseases.
Our parents brought us up, not seeking wealth, but seeking the safety and happiness of his children. Being able to spend more time with them, even if you don't say anything, sitting together is also happy.