It never ceases to amaze, all of the things people think that the world owes them. There are bosses out there who will look you in the eye and tell you that you should be grateful that you have time off, but that time off is just the time you spent not at work between yesterday and today. There are customers who will bust out paragraphs of screed against you personally for not selling them a taco for the same price that they could have bought one in 1987. There are neighbors who will take your parking space and leave a shitty note on your door complaining that your parking space isn't big enough for their car.
At least the rest of us can just sit back and agree that these kinds of people suck. Because if we couldn't do that, we'd all just go crazy. Or we'd become them ourselves out of sheer spite.