alt Hacker NewsKnots in general are a harmless and occasionally useful pasttime for many people. In fact I have a length of rope under my desk I will occasionally pick up and practice a few useful knots in just to keep them in my muscle memory. It's similar in many ways to people who solve rubix cubes or play with fidget spinners.
And you never know when they'll come in handy! As a negative proof, I recently found myself trying desperately to remember how to tie a bowline hitch to stake down some garden stakes, and something in the "out of the hole, around the tree, back into the hole" was just not happening for me. Ended up just quadruple knotting and praying.