> Sometimes I wonder if my life would be different if I'd had a LinkedIn account. Maybe someone would have reached out 15, 10 or even 5 years ago, especially when some of my skills were in demand!

Just as a frame of reference, my profile on LinkedIn is not marked as "Looking for jobs" and I receive multiple recruiter messages every week, often one per day.

Not having LinkedIn is not really a viable option nowadays (unfortunately), unless you know you're in an extremely stable job that you plan to stay at for decades to come (which you can never know).