“But, when I talk to people in general, most seem to not worry because they “have nothing to hide”, and most are only worried about their passwords, banking apps and not much else.”

Sounds like they have passwords and banking apps to hide, You should demand their bank account and credit card details to verify that they have made no illicit actions.

If they point out that they have no reason to trust you with that information, that’s when you point out that police, government, or corporate groups are made out of people just like yourself. They might have some codes of conduct, or a vetting process, but it just takes one person malicious or careless enough for you to be severely impacted.

You may have nothing to hide now but what if your (political) opponents reach a point where they have access to your data and the (political) power to use it? What happens if they don’t like your opinions which (you think) you don’t have to hide now?

My opinions may mostly align with the current general consensus in my country and since I’m not politically active I am rather unlikely to be harmed because of my opinions in the foreseeable future (unless I call someone 1 Pimmel). But there are certain developments that are troubling and there are people who don’t like what I’ve said on the internet (duh). Now, I’m not exactly anyone important and realistically there are far more important targets than me personally. But still, it’s not unthinkable that the things I’ve said (things I’ve looked at on the internet, things I’ve bought, things I’ve like/upvoted) might be used to my detriment if certain people came into a position where they have access to any stored data on me.

This applies regardless of your political leanings. If data exists, no matter how harmless it may seem, there’s always the possibility of people who REALLY don’t like it getting access.

I have done nothing illegal and nothing wrong, yet I have everything to hide.

I don’t trust what judgements our governments 10 years from now wants to put on me, my family and my children based on my current loud political acceptance of trans rights, free abortion, and my express hatred of fascism.

Cite historical examples of seemingly innocuous and public information falling into the wrong hands.

e.g. The Nazis used demographic records (marriages, births, christenings, etc.) in conquered lands to ID Jews and other “undesirables”.

I may have nothing to hide, but that doesn’t mean I want it on public display either.