I've been throwing moderately large parties the past 2 years (12-40 people) and the lack of partying is definitely noticeable. Most people don't reciprocate, making it disheartening to keep doing it. I wanted to build friendships out of it, and hopefully get invited to more parties myself, but so far it hasn't happened. It's a decent amount of set up (cleaning, buying food, coordinating), and a lot of clean up after…
I know this is HN, but sometimes - maybe, hopefully, sometimes - neither R nor I is involved in an action.
If you aren't enjoying doing it then by all means stop doing it. But throwing a party isn't supposed to have deliverables or action items.