I certainly have, and done more than consider it, have taken action. For instance why would a game need my locations? I selectively allow location for things that benefit me. And only when they are being used, not in background. Others I turn off location completely. Most system services location items are turned off. Not only does this reduce who has access to my location but also reduces radio use both in GPS location and in cellular transmissions to send out that information, thereby extending my battery reserves. That also reduces my data usage, which I pay for and not the businesses and organizations that would consume it tracking my moves and selling that information.