There are companies like Nielsen that will pay you directly for you to provide personal data. But regardless of that, there are plenty of things that we do for free, like babysitting our own kids or answering our own phones, that if provided to someone else we would get paid for. So if your data is worthless to you, that doesn't mean it's not valuable to someone else. And we know for a fact that data is valuable, so why are you even raising this point, except to be argumentative for its own sake?