It is creepy to have a company know:

Your sexual habits. Haw many partners you have , how, where, when you have sex with them. Facebook and google log your mobile phone GPS coords.

Your political views.

What your friends thing about you better than you do(They control and store all of their private communications, including phone calls with Skype or Whasapp).

All your family and friends experiences and meetings.

Then they store this info and give it to the powerful companies and governments on demand, like we know via Snowden . For me it is creepy as hell.