On the other hand we can use it as a criterion on selecting a good workplace. If you do not feel comfortable with your coworkers then maybe you should not work there.
I don't find fulfillment in my work. I hate the question "What do you do for a living?" I am there because I need to be until I have enough not to be, and so while I'm there I can't afford to be miserable too.
(in person, i did get friend requests in internet games)
I've observed that the more highly paid and "professional" your work environment, the harder it is to make friends through work.
In Japan it is however common for people from university to graduate together enter their workplace together at the same job, and then get promoted together and change department together etc..