"they would attack us and last for how long?"
Those bozos implicitly rely on our magnanimity even in an overt conflict situation. There are some lows we would never touch, we're the good side after all.
If God forbid, we were to play by their rules, we wouldn't even have to get off the couch to launch a long-distance mini-armageddon.
Instead, we put effort into avoiding collateral damage, precision targeting etc and even put boots on the ground to protect and recosntruct. Where's the freakin' comparison??