You will realise that "don't use it" quickly becomes "use elaborate methods to block it wherever possible" and even if you do that, your data is still being misused through third parties who sell it. FB, Google etc. are not simply opt-in websites with obscene privacy policies. They are data dealers and advertising businesses whose reach extends far beyond their own web properties to a large part of the Internet.
You're excused for this ignorant opinion if you are naive enough to actually believe this is going to work.
I do have some reading material for you though
https://www.theguardian.com/technology/2015/mar/31/facebook-...
https://www.usnews.com/opinion/articles/2013/05/10/15-ways-g...
You will realise that "don't use it" quickly becomes "use elaborate methods to block it wherever possible" and even if you do that, your data is still being misused through third parties who sell it. FB, Google etc. are not simply opt-in websites with obscene privacy policies. They are data dealers and advertising businesses whose reach extends far beyond their own web properties to a large part of the Internet.