Why do so many NFL players go bankrupt?

[Schneed10]

Let's not sugarcoat it, you don't need an MBA, CFP, or read any financial self-help books to manage your money. You simply need basic arithmetic.

I have X amount of money. I spend Y per month. It will take me X divided by Y number of months before I run out of money. That simple.

The bottom line is these guys aren't thinking, at all. They simply WANT things. Want want want, with no regard to "should I".