It's very much like I have a hidden meter for dealing with other people. Once it's full, I'm done with people. It doesn't really matter how much I like or trust these people. I can get burned out from talking to folks at work and need space from my family and vice-versa. I just need time to be alone and not have to consider making conversation or entertaining anyone. I need space for my thoughts to expand and to not be constantly distracted by other people's "noise". I love my wife. I love my kids. I enjoy spending time with them. But when that social meter is full, regardless of how it got full, I have little ability to engage with them.