Especially when I don’t really know anyone. My brother is hosting a Christmas party for his horse riding friends, and I am there also. I have met some of his horse friends, but I am very introverted, so at a party such as this, I am not very socialable. And not that I am not enjoying myself, but there is a (very low) limit on small talk I can stand. And people tend to assume if you are quiet, you are not having fun.
So I eat, instead. I can’t be expected to socialize if I am busy stuffing my face.
And that’s why I don’t like (socializing at) parties.