I had quite a nice day with other people's children! First I went to visit a pal with a one year old and a one week old! The one year old stroked his baby sister's head very gently; he was adorable. And the little baby was as sweet as only a one week old can be!
And then I had an email from a university-age friend, whose parents are farther away from her than I am, and I answered with zeal.
Finally my university-age Polish teacher arrived, and I heard about his housing woes and the genitive case.
It was all very satisfactory. I don't think children, teenagers and university students understand what a lift they give older people (including 40 year olds) just by being there, but they certainly do.