We don't have locks on our front doors to make it impossible for unwanted people to get inside our houses, we do it to prevent the average person, deter the interested criminal, and hopefully give us warning when it is or has happened.
> Luckily, I guess, securing yourself against state level actors
To be clear, there is no securing yourself against state level actors. You can harden yourself, and reduce your target area and/or footprint, but there's no way to actually make yourself secure.