The greyification of our lives, the loss of whimsy and kitsch and being too afraid to be a little cringe, I get the sense that a lot of people associate "growing up" as the loss of any and all expression: we wake up in our grey beds in our millennial grey house, drive to work in our grey car to work in our grey cubical, etc, etc. If you want a gauche laptop covered in stickers, do it, embrace the gauche. Everyone sneering at you is more miserable than you.