Google+ will cease to exist in April. Google has had too little use and too many security issues.
My favorite comment on this is from Significant Digits, a daily set of notes on numbers in the news. It reports this under the headline 52.5 million users. (Of these, due to automatic posting software, my company is one!)
I’d tell you that if you were using the service, you should prepare a migration plan, but, let’s face it, you’re not.Significant Digits for Tuesday, 12/11/2018
For reference, Facebook has 2.27 billion monthly active users.
Note: The featured image is of Google+ on my display, set up so that I could show myself using it, which I wasn’t.