Anybody else not making a social media announcement?

I am 16 weeks and have not posted anything on fb or Instagram. I just can't decide if I even want to! 80%of the people on my fb or more I will never actually see or talk to again! They are all old friends from high school and college. I don't feel like I need to share my pregnancy with the world. I kind of like keeping it an intimate thing between my family and close friends.  I keep going back and forth about posting a big announcement...anybody else having this dilemma?