Getting smacked with stuff from space is one consequence of being a very large gravity well.
Of course, being a very large gravity well also led to life on this ball of dirt...so I’ll take the good with the bad, thank you very much.
Now that life has the ability to track, and shortly (by geological measurements of time) will have the ability to either shoot them down or move them out of the path of this ball of dirt.
Depending on the size of the rock, if it's going to bullseye an enemy nation, we need to let it.