Everyone has their own opinions on privacy. It really isn't advisable to judge people for this because we all have different life experiences, some traumatic, some annoying, some just being OCD. We are what we are.
That said, I prefer a certain amount of anonymity because I'm in the business world and my opinions, however innocuous might have an effect in a business relationship or negotiation. It is just good business practice to remain as apolitical and non-secular as possible in my private life.
If I tout or rave about some product here that has some corporate connection to a rival I might have a business relationship with it could jeopardize or diminish that relationship. Google indexes anything and everything these days. Why take the risk?
Once I retire I could really give a hoot but as long as I make my living with business relationships it is just good practice for someone like me to maintain privacy. Privacy is not 100%, either. A motivated stalker can use social engineering to get to a result but this takes time and effort. Google searches don't.