The gpl is pretty much designed to maximize the freedom of the user by creating an environment where its impossible for to fork the work and keep it to yourself. Its even hard for the creator as he could end up competing with his work so far + the community.

This might mean it is not in useful to you but it doesn't make it bad. In other news your motor home is probably not the best option to commute to work and living in your car isn't the best experience.