If I want to play it with a different group, one the people who have it are not part of, then I consider buying it.

I’ve also bought some games that I just had to have because they were just that awesome. And then never played, because other people already have a copy, and sometimes they have more content or whatever. Terraforming Mars, for example, I ended up only playing it a handful of times solo, and then the app came out, and I haven’t opened my copy since. I try to avoid doing this now, because it really doesn’t work out that well.

Although I am considering buying Brass: Birmingham so I can decide when I want it to be available in a meetup. Also Spirit Island, but that’s because I think I can get my kids to play with me.

So ultimately I sold it (to another person in that same group ;-) )

That sounds like an ideal outcome, since you still get to play it.

TtR first journey is great because it’s easy to transition to the “full” game after they outgrow it. Catan junior is similar in this. That’s also my main complaint about Stone Age kids, it’s not really the same game.