Facebook is a social networking site where you can can call, have a video chat or chat with your friends. But it has several disadvantages:-
1) Your pictures are not safe. Anyone can download your pic from your profile pic and can misuse it by putting it in some other website.
2)Too many hackers are there in the world. It is not a big thing for a hacker to hack your entire profile and have access to it. It had happened many times.
3) Many people make a web page which is similar to Facebook. And if you try to login your account will be hacked. And facebook is doing nothing about it.
4) If you do not have a good profile page, it may affect your personal life and professional life as well. Because if you are connected on fb your profile pic is too visible to everyone. So it may affect your life.
Thank you.