I think that’s a part of it. They’re also usually the ones who are likely to end up being longer-term residents so they’re more invested.
I don’t mind chatting, but usually when a I’m outside my apartment I’m in the process of doing something. Personally I hate getting trapped in small talk when I’m just trying to spend 60 seconds to take my trash out or walk to my car.
If you’re using whole eggs, generally yes unless you have a use for them. You can store just the yolks for a short period in the fridge if you want. They also sell cartons of just egg whites in a lot of grocery stores, at least in the US.