You didn't even mention the fact that the recoil slows down the ability for good follow up shots, that the capacity is low and they are slow as hell to reload. In fact the only benefit to a shotgun is when shooting at optimum ranges around the 25 yards mark, so folks with questionable skills might still be able to make hits.
Nice to know I'm not the only one that has seen the light.
Where's the DISLIKE Button when you need it?