In a social gathering,
the most common shared interest between us is what dictates the discussions. So larger the group, lamer/dumber the discussions are going to be unless it's a forum where like-minded people gather. I personally think 3-4 is the right group size to have any meaningful discussions. I'm not an introvert nor an extrovert and I do agree with OP however I've found that adding some parts of such non intellectual social meetings in life helps our mental state as well.
