Agreed,
The others are out there between us and the Ort Cloud however and are bound to suck up something headed this way occasionally when talking about the galactic time scale.
To put it to bed, if there were something big enough to impact the Moon, something on the order of the pieces of the comet that hit Jupiter, what isn’t blown away and into deep space from the gravitational pull of the Earth is going to come crashing into us. It’s a darn good thing Jupiter is a gas giant. If it were a terrestrial planet enough big impacts over time and it too would be obliterated.