Personally I suspect that Jupiter flings as many comets and asteroids away from the center of the solar system as it flings toward it.
I’m declaring this glass half full.
Well, actually, without Jupiter (or equally massive body: insert Rosie/Moore jokes), the asteroid belt may collapse and the inner planets might be pulverized.
Jupiter's position is like stopping a terrorist attack. Few are happy when we are successful at stopping one, but everyone is angry when we fail.