First, I am not talkative and introverted.
Introverts are not used to the lively party environment. The party is a kind of torture for them. They have little communication with colleagues on weekdays and can't let go of the party. I don't know who to talk to, so these people usually don't go to dinner.
Second, there are contradictions with colleagues or leaders.
There was a colleague who was like this before, and his personality was very small. Colleagues and leaders inadvertently offended her. She can always remember that when she sees someone who has offended her, she will not give her a good face. And I don't go to the party at all, because I don't want to see people who have problems with me.
Third, people affected by family.
Sometimes dinner parties will stay up late, and even colleagues will drink a lot. People with family or children at home often attend dinner parties because they have to go home to help look after the children. People who value family or life don't often attend dinner parties.
The reunion dinner is a good thing, but don't take it too seriously. Everyone has his own life. People who don't go to dinner are not necessarily mentally ill, so you don't have to worry.
Hidden behind the social culture is an extremely cruel interest chain. People who have no resources, no background and no use value will definitely be marginalized and have no right to speak in the collective. If you see through all this, of course, you know that participating in such collective activities is nothing more than wasting time and asking for it. Instead of pretending to be gregarious, it is better to take the time to improve your use value to others or relax yourself, or take good care of your family talents. There is no need to waste life on colleagues who will become passers-by at any time, and there is no need to please leaders who are not familiar at all and think they are inscrutable and can play with others. There is only one life, be kind to yourself.