So the thought process is: "I want this" "I am not allowed this" "I should be allowed this" "I will take it anyway"
This is seductive, easy, and the wrong way to go for most things.
I understand the frustration. I have felt the same way many, many times. I suspect that if people who illegally downloaded movies posted money to the studios who created the content directly, then this problem would disappear pretty much overnight.