We do not inhabit anywhere in the solar system outside of earths orbit.

Also, you say you understand the scale, but I dont think you understand the scale.

I absolutely think if/when we get to other planets we will trash them. Though none of it will matter on a cosmic scale in any way. like we could have a galaxy wide civilization of hundreds of planets all spinning out garbage with no attempt at recycling and still it wouldnt even register as a rounding error as far as calculating the amount if space it occupies.

We are great at trashing planets. It would take gods to trash intersteller space in a noticable way.