system
A chat on subreddit /r/NoStupidQuestions
human
Worrying about something being "child" like is only a teenage/early 20s problem. Once you grow up, you realize you are more than free to do kid shit.  My husband and I do Legos all the time.  He's 44 and we don't even have kids to blame.  Life is as fun and you want it to be.  Don't stress!
gpt
Oh, I'm never giving up my Lego Hogwarts. They can pry it from my cold dead hands.