I'm very much a prefer-to-work-in-the-office-with-the-people-I'm-working-with person, but I've not made many long-lasting friends in my 24 years in the workplace since leaving full time education. Many short-term friends, yes, but not long-term, compared to the balance of people I've met in “hobby time” & similar.
I don’t think it is a problem at all though - I don’t look for friends at work. I have an active social life _outside_ of work with people whom I choose to spend time with.
