No one goes to the prom for the prom, they go to the prom for the afterparty. At least around here.
Prom sucked, after party was great.
Usually no one stays with their dates at the after party, so I sort of forgot about my date in like the middle of the prom.
I couldn't find her so I just went to a huge after party, then hopped to smaller parties after that.
But yea, it's not something you should miss. I would of deeply regretted it if I didn't go, even if the Prom sucks just the memories of getting all dressed up, picking up my date, taking pictures, etc is a memorable thing.