Well... at least you have a problem with them at all. We have that technology too, obviously, but, at least us, from the Earth Sphere, haven't wandered out much further than Jupiter.

I guess, if you look at it on a bigger scale, anything we've done centers from Earth. They're going too far out and...
We're all doing the same thing, now that I think about it. You head out way from home to get resources; hunting animals and building materials. We do it too, just from the rocks and planets nearby. They're heading out who-knows how far to come get out blood and bones.

So, it all comes down to a regard for consequences, doesn't it?