Just because everyone has it doesn’t mean you need to sell your privacy as well. Facebook might be free signup but they track everything that you do and they see your likes ans dislikes and all your informations and they sell it to advertisers. Its a very lucrative business. You might think well it connects people and helps you find your friends but at what cost, you are literally selling yourself to Facebook and facebook will sell you to the advertisers. This is how free websites make money. Please be aware abd don’t fall for this trap.