Trying to act cool?
I played with Lego in the 70s ... before Space Lego was introduced (which came out in '79 or '80 iirc). New pieces don't bother me, but fully custom sets designed to build one thing, do. It's contrary to what Lego is about.
Though I suppose these Lego kits are aimed at adults, and go well with all the awesome pre-posed action figures, that sit around gathering dust...