I just don't enjoy parties period.
I didn't like them when I was drinking and I don't like them sober. They seem pointless to me. Especially work parties. I see you people enough!!
I'd rather do anything other than a party any day of the week, and I'm five years sober. I always felt trapped at parties. Even at weddings, I like to say, "Congrats" to the couple in the reception line and then leave. Birthdays are tricksy. I kind of feel like big birthdays (21, 30, 40, 50, etc.) or kids' birthdays deserve a party, but not the other birthdays. They feel like gift-grabs to me, unless they say, "No gifts."
Okay, maybe it's me.