I'm lucky to live in a country (Poland) where border agents can either let you in, arrest you if there is an arrest warrant, or detain but only with a lawful basis for detention (as in, you are posing a threat to others) and detention may be used only when other measures have proved pointless or ineffective.

This makes returning to the country nice and pleasant. The border agents never ask you creepy questions like: Where are you going? Where will you be staying? What do you intend to do? (it's what US border agents ask their citizens). They just say hi and let you in.