About socializing: I don't mind socializing with people with qualities I dislike, but I much prefer to observe than engage in conversation. I don't have social anxiety at all, sometimes I just don't want to talk or don't have anything to talk about.
About partying: I enjoy parties, alcohol, etc but the parties I go to never involve socializing.
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After a time, you may find that having is not so pleasing a thing, after all, as wanting. It is not logical, but it is often true.
--Spock