And then there's this weird idea that it is so complicated that you have to build it once and then never take it apart. Please, taking it apart was a huge amount of the fun for my son. He'd repurpose parts into his never ending scene that sprawled a 10x10 area in our family room. He (and us) would play with them literally daily for at least an hour, if not more, adding sets as they came along. Much of it stayed in bins, just because he had so much (youngest child of a youngest child, means you have lots of generous Aunts, Uncles, and cousins!).
Even now, at 13, he literally was putting a set together with is friend just yesterday. It's rarer now, since he likes the intense interactively of computer-based "legos" (People Playground, Minecraft, Garry's Mod, Teardown, and modding for other games, not to mention VR stuff).
Modern legos are awesome.