Two major reasons: 1. I don't want my data used against me politically - there are legitimate reasons to shield your personal data to protect yourself from pol

Two major reasons: 1. I don't want my data used against me politically - there are legitimate reasons to shield your personal data to protect yourself from political persecution from ordinary people to the government. E.g. A gay man may fear his homophobic colleagues will bully him, a migrant may fear that his right-wing boss may fire him if he knows his origins, a muslim may prefer to not grow a beard or a Sikh not wear turban to hide his identity to safeguard himself from unwanted hostile attention from strangers etc. etc. E.g. 2 - The United State government now demands that you tell them about all your email and social media accounts when you apply for a US visa. 2. I don't want my data used against me commercially - BigTech want more and more data about us to determine how to influence our behaviour. Preventing them access to my personal data protects and allows me to make rational purchase decisions, rather than those based on impulses influenced by BigTech overt or covert advertising. Denying corporates access to our personal data does both, because BigTech now also sell our data to government agencies. Since the government is one of their target customer base with a big purse, BigTech have now also started using our personal data to try and influence us politically.