> If other people had the right to use and sell my hard work with no recompense, not only would I be angry, I would likely not code at all.
Then you should stop producing Free Software right now. Others can both use and sell your Free software without recompense. See also, Red Hat.
In a world without copyright, I would continue to produce software in a world without the GPL. It's not like I receive remuneration for Free software that I produce now, nor that others bundle and resell.
I would _not_, however, release the source code except to close, trustworthy friends. If others were to want to find out the secret sauce, they'd have to reverse-engineer it, like they do now.