I can't stand going to bars anymore for the same reason. For parties though I feel like that depends on a few factors, mainly mood and who you all know there.
Last night I threw a keg party and it was a blast. I obviously knew and was friends with everyone there, and it was an event I was planning and excited for all semester pretty much.
Two days earlier on the other hand, my brother had a bunch of people over for his birthday. I got home from errands around 10 and was dying of exhaustion. I knew pretty much everyone there, but they weren't my close friends or anything. My brother invited over this girl he's seeing, and she brought a friend that I immediately knew I was supposed to wing. She was decent enough looking, but I was so tired and overwhelmed that I just had nothing to say to anyone, so I almost felt bad because my brother didn't get laid as a result. Everyone was drunk and loud, and I was sober and tired. It sucked.
A few weeks before that, I went to a friend's kegger for a beer pong tournament. I didn't know really anyone there, and it was a bigger crowd than I'm generally comfortable in, but I still had a lot of fun because I was just in a mood to party and socialize.
In sum, house parties are the tits. You just need to plan it properly.