The set of natural numbers, the set of rational numbers, and the set of integers walk into a bar
Before long, they've had their fill and start causing drunken havoc, disturbing all the patrons. The bartender intends to get to the bottom of this matter. Reasoning that a mathematician would be able to help, he calls Bertrand Russell.
"Hey, I've got three sets in my bar and they're acting p...
When someone tells you that the integers are a more useful set of numbers than the natural numbers, stop talking to them.
You don't need that kind of negativity in your life.
My math professor explained natural numbers
Natural numbers are like beer. You can have 1 beer, 2 beers, 3 beers... but not 0 beers, that's unnatural.
All numbers are equal
Long ago in the Kingdom of Natural Numbers, there used to be slaves. The citizens appreciated the number 2 so much, to a point that they would determine one's social class by his/her divisibility by 2. And those not divisible by 2 - sorry, then they're slaves.