Air defense alone isn't really a sustainable military strategy against endless rocket attacks. It would become even less viable if Israel lost US military aid, lifted the blockade, and/or stopped bombing things like rocket factories.

If Israeli bombing really were indiscriminate how did they manage to average less than one dead per bomb dropped in urban/suburban environments?

> how did they manage to average less than one dead per bomb dropped in urban/suburban environments?

By targeting first responders, jornalists, paramedics, and any professionals able to properly rescue wounded, dead and count the causalties, making available numbers a gross underestimate on the true death toll. Just a few days ago we all watched a staircase full of working first responders and jornalists being blown by israeli tank fire.