If someone can make it 20 years with zero hallway conversations I assume they aren’t very pleasant to be around.

I mean, if I asked OP if they had a nice weekend, what would happen? Would I be ignored? Just a grunt in reply? Or a “fine” and that’s it?

I assumed they were referring to the spontaneous work-related hallway chats that middle managers and executives claim are so important. I'm not OP, but I relate, and while I'm not big on small talk I'll engage in it because I respect my colleagues and I don't want to snub them.

If you ask someone if they had a nice weekend and they give a one-word response, why not just not ask them questions like that? It seems rude to expect someone to put a certain amount of effort into conversation with you that you initiated.