Would you take pills prescribed by your doctor without knowing what's in them?
What if the prescription label only read "Provides various improvements to your mood and mental stability" but didn't list the active ingredient? Would you take it?
So why would you trust a corporation to install software updates on your computer without telling you what's in them? Microsoft apparently expects Windows 10 users to do so. Do you think this is fair? Are you going to avoid upgrading to Windows 10 because of this?
Some have stated that they expect to stay on Windows 7 for the foreseeable future.