No such thing as perfect security

Lots of security threads I see go something like this:

1. You should use <tactic> and that will protect yourself from attackers
2. But <tactic> you can't protect yourself from really serious dedicated attackers.
3. <tactic> definitely can't protect yourself from state actors
4. Give up.

It's like mad libs.  Encryption, long passwords, keeping your stuff locked up, etc.  The only real conclusion to any of this is to stop using technology altogether.