I am in the process of deleting my google account.
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Do I lose anything regarding browsing?
To my knowledge, the only thing you lose is your doorway to targeted ads.
While I've maintained my Google account just in case, I NEVER log in to it, but I don't doubt for a second that they're maintaining a dossier on my ISP address's activity. (Facebook too.)
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