I mean, granted it may be more of a contractor thing, but who makes friends at "work"? I mean, you go there to earn money and leave for the day, period.
Oh man, I'm sad for you after that comment. I understand work/life separation and all that, and I can also be painfully introverted, but if you form no meaningful relationships someplace you spend half of your waking life, I hope you'll reevaluate your priorities. It's not like you have to go to each other's family events or be besties or anything, but if you don't have someone at work who you trust enough to really know how each other is doing, might I humbly suggest you're missing out and there are better workplaces to invest your time.