How to treat the phenomenon that the dishes in rural banquet rooms are looted?

Let's not talk about the present here. Even when the countryside was still difficult a long time ago, there was no time to grab food when eating banquets. At that time, although the life of farmers was relatively hard, when eating banquets, some old ladies would give their children two or three buns, but no one would rob them. Later, when people finish their work, the host will give some unfinished meat and vegetables to relatives, friends and neighbors. In fact, it is for everyone to help solve the leftovers. The above is the previous situation, so what about now? I am from the countryside, and my family is relatively large. Almost every year, there are several major events in my family, such as weddings, funerals and weddings, and there are about twenty or thirty tables of guests each time. Not only has there never been a case of grabbing vegetables, almost every table can't be eaten, and even some meat has left a lot of vegetables and meat before moving a few chopsticks. Now no one wants to give it away, but you have to throw it away and waste it in vain, which makes people feel very strange and regrettable.