I do make multiple data backups. Because something WILL (almost certainly) happen sooner or later.
I can't defend against every eventuality that may happen to me although I take mostly reasonable precautions. Which doesn't include recording everything 24/7.
Maybe 24/7 is impractical. But it is pretty easy to put camera into bedroom. And if you put big industrial label "This area is monitored by CCTV" as decoration, it makes recording perfectly legal! Nothing impractical on that.
That's fine. I just will not be entering your house for any purpose.