As a kid I loved the giant boat hull piece because it was sealed and actually floated. This in combination with some larger pylon-type pieces from the Star Wars set meant you could build floating cities and vehicles and such and mess with them in the kitchen sink.
Lego suffers from a fandom problem among adults: They have strong nostalgia for how it was when they were kids and they think everything since then is against the natural order of Lego.
The best way to enjoy Lego is to give it to some kids and watch them get creative with it. Unlike all of the Internet complaints, kids have no problem having fun with Lego and being creative in their own ways.