Re: nobody cares what you do your data is just data.
Until you annoy someone who does care, and can (mis)use it against you. The future need not be the same as now.
Maybe you or someone you know suffers some significant wrong due to corporate or government incompetence, corruption, or malpractice, and so you start campaigning to fix things. Now that "just data" could be weaponised to attack or your credibility personally. But maybe it's not you, since you prefer to keep your head down and hope to stay invisible, but instead someone you know. Except they are too clean or too careful, or a bad choice from a PR perspective, so instead you become the target as "they" begin to apply indirect pressure.
Hang on, I think my my tinfoil hat has just worn out. I'll have go and get a fresh one :-)