I'll like to stress once again that the cyber-spying issue has been going on in social media and video sharing websites where you get tracked by the companies with data being sold to advertisers. However, this is where things got worse. It seemed that Facebook's data collection was involved in the US-election in which the data collected was used for it and people around the globe were pissed because the privacy violation had gone too far. Will there be a court case against Facebook for this? Who knows?
According to Softpedia, removing your Facebook account may take 90 days but I'm mostly active on Facebook, Twitter and YouTube and I rarely use other social media websites like Instagram. It may be a good time to hurt the service by removing your Facebook account but that's not enough according to Softpedia. You may need to modify the HOSTS file in Windows OSes to block access to Facebook entirely. While it may be easier on personal PCs this way in modifying HOSTS file, to get Facebook blocked in enterprise, school and public environment is a different story in which OS and network policies are applied without having to go through everything one by one. And in fact, do you really want to apply the enterprise-grade policies against Facebook at home in which the entire family won't be able to access Facebook?
Another news from Softpedia is regarding the Facebook Container for Firefox. I don't know if there's a similar addon like that for Chrome but Facebook Container is an official addon made by Mozilla to make tracking even harder. It's a lesson Mozilla teaches Facebook with since the privacy violation had gone too far and it took some years for someone to report this situation. What this addon does is to isolate Facebook in a new containerized tab. However, there are flaws. Using comments, likes or even Facebook shares doesn't make you secure as information can still be transferred to Facebook service. Not to mention that you still can get tracked by Facebook when doing anything in Facebook.com.
Even the Whatsapp founder has encouraged you to remove your Facebook account but to close your account like this is a last resort and you must have a proper reason.