If people don't like copyleft because it limits their freedom, they should lobby against copyright.
@clacke just because some people don't like really spicy food doesn't mean we should abolish cooking
@emilian The only restrictive part of copyleft is where it doesn't allow you to redistribute whatever you like however you like. That's copyright, plain and simple.

It then gives you a method for not being restricted by copyright as long as you don't restrict others' ability to exercise the same power. That's far more than what non-free software gives you.