It's a different lifestyle. When you're a pro athlete it's not like you can get a Condo and go home and enjoy your private theater with friends and be done with it.
You get dragged out to clubs, you get all these people convincing you, you're a big time player and need this and that, etc.
It's hard to understand.
But at the end of the day, many pro athletes are intellectually not smart, and they often have shady accountants that make some questionable investments.