I personally don't like having people over to my house, mostly because my living situation and family life is far from ideal. Occasionally, if I'm the only one home, I'll invite people in to meet my pets, but usually I prefer to go to other people's houses or meet up in a restaurant or something.
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"Have you never seen something so mad, so extraordinary... That just for one second, you think that there might be more out there?" -Gwen Cooper, Torchwood