Was it ever? I mean, they really pushed for it to be something little kids got into over the past 8 years or so, but when it came out everyone playing the alpha and beta etc for a few years there were us people around 18 :-D

Everyone I know has played a good amount of Minecraft in the past, though to be honest not in recent years (so maybe the player base is more little kids now than it used to be on average? I have no idea).

Your office sounds like a cool place

I started playing in my late 30s when it was relatively new. Friend at work was playing it and showed me a video of somebody who built a computer in game. I was in.