I stopped using Gmail recently, but the primary reason wasn't that Google algorithm reads my email.

I just finally realized, that by storing all my emails to some company server is potentially dangerous to my privacy. I just don't know, who can potentially access my data, now or in the future.

I switched to another solution, which is to periodically download my emails through pop3s to my local truecrypt-ed drive. It is a slightly more work, but not that much work. I just feel better not to have my private data with Google.