Every time I am sad, I think to myself that there is someone in the world right now who is trying to pull open a door that says "push".
I once worked for a caterer [5 dollars an hour!!:-)] when I was a kid and part of my job was to stand by the door and tell all of the incoming guests "downstairs and to the left". This was not exciting. To make things more interesting, I started keeping track of how many people pushed the "pull" door [or vice versa - I don't remember]. The vast majority got it wrong the first time.... Why? It is 50-50? Ask "Murphy" of "Murphy's Law".