Me either, but I'd venture that the right-wing outlook of Netanyahu that favors meeting violence with greater violence plus "we don't owe them anything", coupled with a blind fury to respond quickly that changed into a resolve to see it through rather than re-evaluate the strategy explains most of it.

Yes, it would have been a massive logistical operation, but if done carefully it would have been profoundly more effective at actually getting rid of Hamas and the terror-supporting infrastructure in Gaza, and with an immensely lower civilian death toll.