It's hard because those are all organized events - in early years, you can just idk, throw some beer around and hang out, order a pizza, but as an adult there are Expectations that it's a set table, you cook yourself, you make sure your house is presentable, etc. When younger, you just hang out; as an adult it's almost like dating, you want to make an impression. It's a lot more formal because you're not poor anymore.
The worst part of this is that you have to make sure your house is clean. Food, get people to chip in, alcohol get people to bring their own drinks. If you're having to bend over backwards to impress people, they're not your friends and they won't be.
