I made one years ago and used to occasionally go in and update it, but with my most recent job I didn't even take the time to add it. The past few years I've really re-evaluated what should be public, easily-accessible information for anyone who knows my name.
And all I get from having an account is recruiter spam, and emails for connection requests that are oddly written in first-person and have the person's name as the sender which seems weird.