Yep. Just remember Stane; you can tell if an engineer is social if their looking at your shoes instead of theirs.
Space is big. Like really big. Like
really really big.
While it's a very rough estimate
this calc puts the average distance between Asteroids at 16x greater then that of the Earth and Moon.
So issues 1 and 3 are unlikely. As someone, I can't remember who, put it; "You can fly through the asteroid belt without even realizing it's there."
To be fair the issue of some asteroids been mostly a clump of loosely held together dust is an issue but we can detect that so only solid asteroids are likely to be targeted.