To my knowledge, the only thing you lose is your doorway to targeted ads.
Don't forget the opportunity to use your Google ID and password to log onto other sites so Google can track your online activities more closely and thoroughly.
I didn't forget it; I just plain never put those Google and Facebook logins into context.
The new Great Equalizer is the SEND button.
In Memory of Harv: Those who can make you believe absurdities can make you commit atrocities. ~Voltaire