I look at model trains as an addiction I might not come back from.
I always feel that I am just waiting one more day before I give up my basement, free time and money to it. (Only respect to people who use the same technique to hold off serious addictions. It just also happens to work for model trains...so far.)
Yes. I've found that an open positive comment about Lego can create a sudden mini community of adults who don't get to talk about their Lego habit often enough.
Anecdotally, the raw data I have encountered seems to indicate that absolutely everyone who can afford any level of Lego habit, has a Lego habit.
I've met maybe two people who are too busy with their hardcore 10000 piece jigsaw puzzle habit to get into Lego.