I have never really expected my former workmates to do much in the way of making an effort to attend my gigs. I guess they saw more than enough of me at work and vice versa. I don't think some of them were particularly interested in live music, regardless of who was playing it, so I was never hugely offended. I don't expect everyone to be interested in the same things as me. Years after I left my old job, it's become an occasional thing for some of them to use it as an excuse for a get-together, organised through Facebook, which suits me down to the ground. It's good to see them and in some cases, have something else to do while they chat.
What's really good is that when some of them see me with a bass in my hands and see exactly what I have been doing on stage, they suddenly understand the long hair that got all those sideways looks and the afternoons I had off to go guitar hunting and all of the gigs that I did that they knew about but didn't come to. It's sometimes really good to shock them with a really tight band that mixes things up a bit and give them something they really didn't expect.
It's also good when people that I know turn up who are into music and then it's the challenge of doing what we do and hopefully impressing them. It's only a challenge because two of the wheels fell off our wagon around May and July and I have had to replace our guitarist and drummer after 9.5 years. The band is getting tighter and more versatile now.
Social media is a good way of gathering the troops - and a lot of my friends were made through being in a band, but I tend not to rely on it for most of my friends as dragging themselves out to watch bands isn't what they all do.