Earlier quoted context omitted.
Are you okay with the whole world, every person you meet on the street, your boss, your parents, your ex, the guy who serves you coffee, that thug you bumped into in the subway, the guys who work at your company's competitors, the guys who live in that country at war with yours, knowing every detail of your personality and your life? Or do you maybe think putting up your information on that open and permanent graveya…
Much like life before the internet, I don't see why you're required to share all that info in the first place. It's up to you to decide what others see, even when you don't have a secret online alter ego.
No, it's up to the person who likes give up as much information as possible that you hang around. "Hey, I ate lunch with ikeyany today", now held in Facebook and Instagram forever. "Tagged: ikeyany" in the wedding photos of your friend.
Even if you're a digital hermit, you'll still be found and categorized, since everyone else seems to love giving up all their personal information.