Need advice from other bloggers about GFC

I am fairly new to blogging and yesterday I read on another persons blog that she has removed GFC from her blog and I am wondering why any blogger is keeping GFC on our blogs.

Maybe this is a silly question, but if GFC no longer is supported then why would a blogger leave it on their page. I am seriously interested in a response because I have still have it on my page because I am not aware of the pros and cons of removing it.

Here are my thoughts. More established blogs may be keeping it because of the great multitude of readers it states they have, thereby giving their blog credibility and I understand that. So today I thought lets see what happens if I sign up on someones blog as a new GFC reader and it lets me sign up, but what is accomplished through this? Wouldn't I be far better off removing GFC and promoting my blog through email follow, and other blog readers such as bloglovin (which I personally use), network blogs, and linky blogs.

I would very much like to hear others thoughts on this subject.

Thank You!!

Linking to: French Country Cottage