Great post. Having lived in SF and being steeped in the "techie" awkward forced friendship conference environment, you've nailed it on the head. It helps to have outside hobbies and interests that other people either share or find awesome, which leads to engaging conversations and friendships. If you're all business all the time, there's only so much runway to try and get off the ground.
100% agree. Super important in the tech world but equally applicable in normal life too!