At what moment did you suddenly feel that your parents were old?

My parents are old, their tongues are not so sensitive, and the food is beginning to get salty. And my taste is very light. So when I first get home, I have to drink a large glass of water after dinner every day. After a while, the food at home seemed to be out of salt. I asked my mother what was going on. She said, "Didn't you say it was too salty? I really don't know your salty taste, so put less salt. " I took the liberty of buying a puppy home this year. I thought my parents would not like it, so I was going to bring it back to Shanghai in September. I didn't expect my mother to be reluctant. Although I scolded him for eating everywhere every day and taking a walk in the morning and evening, my mother still couldn't bear it. She squatted on the ground and threw the doll I held on the ground over and over again for it to pick up. Touch its head intimately. When I was an adult, people touched my head, and I subconsciously wanted to hide. Suddenly a little understood. What makes parents feel worse than their troubles is that they are no longer needed so much.