Google has no business keeping a record of each and every one of your searches, tied to your account, but they do it anyway, and they are increasing the tracking by combining the gmail and browser login.

You may start searching for divorce lawyers at some point, and your spouse might stumble upon that.

These search histories could also be obtained with a subpoena, for reasons totally unrelated to you.

Chrome can no longer be safely used to login to google sites. Just because you don't care about privacy now doesn't mean that you won't later.