Friends or Less?

I recently had an enjoyable day at work. Shocker! It was partly due to the fact that my insufferable manager got fired (and there was much rejoicing among the Hasting's staff!). Another reason it was great is that one of the Team Leaders got told to suck a dick over $2 credit. We all had a laugh about that one. So throughout the course of the evening, I'm conversing with my co-workers and I am getting to know them more. I have to spend time with them so I might as well know them to some degree. And I made an easy observation. We are a rag-tag group of people. We have people ranging in ages from 17-26 and that's only including the people that were present. I am entertained by these acquaintances....at work. But what about out and about (I had to do that)? Would I befriend this group if I meet them in the real world? I started pondering this in my mind and came to the conclusion that most of these people wouldn't be on my friend list. Some too old and some too young. So I questioned my co-workers. A majority said enthusiastically, "Yes, of course!" But I had to disagree with them. One girl said yes and I told her I probably wouldn't be her friend based on what I know now which is her name. She was offended but rightly so. How can I be someone's friend based on a name? I can't. One girl took me serious (rarely happens) and said that she would have to know more about me. And so we began to "get to know each other" and we past judgment upon each other; Maybe, depends. I appreciate her for being honest and her interest in the matter. So would you be friends with the people you work with if you had never worked with them and meet them in real life?