First of all, that isn't simple. How do you determine what is done by humans? If the human is using a computer and using copy and paste does that still qualify?

No matter where you draw the line between "done by computers" and "done by a human simply using a computer as a tool," there will always be a lot of gray area.

Also, if I spend a year creating my masterpiece, and some kid releases a copy of it for free and claims that that's ok just because it's "not for profit," there is still a problem.