The police show up at your door. They tell you they need to search your house. There's a group of them so there's no way you would be able to watch all of them while they search your house. You have no idea why they would want to search your house. Would you feel comfortable letting them search your house since you have nothing illegal? Would you trust them?
Better yet, would you be comfortable allowing them access to search your home at any time with or without your knowledge or consent?
Is there a major difference if the police's searches are only of your digital devices? Do you trust everyone who seeks the job of warrantlessly probing through the private documents of strangers?

What places and time periods are you interested in particularly?