Some of the best friends and mentors I've made in life have been through my career. I still talk to friends from jobs that I left over a decade ago.

That's bizarre to me to have an explicit attitude of not befriending colleagues. It's never been something I've specifically sought out, it's always organically come to be -- but it's not something I would actively work against. I don't understand the benefit to that mindset.

Yeah I don't get it at all. It seems like some people are operating with an axiom that work is fundamentally and unavoidably awful, and therefore you should avoid doing anything that might seem to make it more pleasant, because then you might trick yourself into spending more time than you otherwise would, which by assumption is a mistake.