Reasons why people pirate:
To test the item and see whether or no it is worth their money. (So they don't get screwed over)
Because they are broke (so either way no money will go to the creator if they pirate it or not, however they may really enjoy this item and wound up saving up some pennies for the original. ((Music and movies may not apply))
Their country may have restrictions from them buying this item and purchasing a VPN then buying the item will be a complete waste of money and time (e.g spotify)
Because of hungry DLC developers (e.g Dovetail gaming's Train Simulator that has over $4000 worth of DLC like WTF I would rather buy a real train HECK MAYBE A NEW GAMING RIG!! )
And more...