I used to care, but I don't anymore. They can read my emails, my code, track what websites I visit and what music I listen to, be my guest. I'd let them read my thoughts directly if we can build technology to do that lol. I realized that ultimately, these corporations are too stupid to do anything of value with all that data, so I don't feel threatened.

95% of the people I interact with over email are on Gmail (or Outlook). Google/Microsoft still have those emails either way, even if I switch off.

This doesn't strike me as "reading" your emails any more than a router is "reading" your packets when it forwards them. As far as I know, Google employees (even high-ranking ones) can't randomly start going through people's messages-- that's the privacy that matters.