Meta joined in and replied with this 8 years ago, 10 minutes later[^][v]#880,509
I think they do serve a purpose to warn people they're going to break shit if they take it apart (stuff like hard drives where the tiniest speck of dust inside will destroy it).
Sheila LaBoof joined in and replied with this 8 years ago, 39 minutes later, 50 minutes after the original post[^][v]#880,521