I’m not in SF, so maybe easier for me, but most of my good friends are outside of my industry.
On one hand, it might remove opportunities for networking/progression. On the other hand, I want to get out of my work-self when I’m off the clock and this is better.
I don’t want to talk about work when I’m not at work and although work topics still come up with non-tech folks, it’s easier to not end up in a deluge of techy stuff. And it’s often way more interesting to talk about work when someone is not doing anything closely related to my career (at least for me).