My work devices don't have much on them, mostly corporate asset tags and the like. My own, though, I make my own. The stickers reflect things I like or find amusing; maybe they'll get a smirk or a chuckle from someone else, maybe not.

In the end, they're like the tattoos that someone else commented on. (I have those as well.) If you appreciate them, great! If you don't like them, that's fine too. Fundamentally, they're not for you.