First, in terms of cost performance, cooking at home is definitely affordable. The older generation comes from hard times and has a strong concept of thrift.
Secondly, from the health point of view, now the media often explode restaurant health scandals, and eating at home can effectively avoid these problems.
Third, from the health point of view, no matter some unscrupulous vendors use waste oil, restaurants and restaurants are all heavy oil, which is harmful to health for a long time.