I live in a very small apartment. All 3 bedrooms are very close to the kitchen. My one roommate and her boyfriend live in the kitchen. 80% of the time they are at home, they are in the kitchen. Usually they are pretty good about being quiet during the weeknights, so it's not too much of a problem. But weekends are bad. 

They will come home at 3am and start cooking a meal. Chopping veggies, Slamming cabinets, banging pots and pans. I understand it's the weekend and you're out late, but it's 3am. Is this really the time to play Barefoot Contessa? 

So I get up and ask them if they could be a little quieter when it's past 2am and they flip out. "You're the one who chose to live with roommates. It's the weekend, we can do whatever the fuck we want!"

I get it, it's the weekend and some leniency is required. 3am just seems late. Am I the Asshole? 