There are so many ways that you can get addicted to anything, though most people nowadays usually communicate with each other via social media sites like Facebook and all other popular social media sites. Facebook itself has made an impact to human lives, though it has its own advantage and disadvantages.
Others use it in building a business while others use it for personal matters like keeping in touch with friends and staying in contact with them no matter where they go. Just like what I said it can be addictive, and it affects human lives in different shapes.
Some people are aware of those disadvantages, others don't use it, others don't care about it, but once you are addicted to it , it becomes a part of your daily life that you can't seems to live without it. you feel like you need to open your facebook account and post something to gain likes and comments.
So here's some valid signs and symptoms that you are addicted to it.
You don't sleep anymore, you just want to be on your Facebook account all the time, chatting and commenting and posting all kind of stuff.
You like gossip, you care about what people are posting and how many likes they are getting.
You want people to like or comment on your post/picture right away and it makes you feel sad not getting any likes or comments.
there's more but that's all for now.
image from: google
I agree with what you say, but now people do not care about them, they even act like natural things. As a recommendation in this regard, I can only say: we shouldn't to lose control in social media. However, it is funny that we talk about this subject through another social media. :)