Your choice of statistics is misleading. A ceasefire is not an end. It is a temporary reprieve. In the same poll:
Six in 10 Americans (60%) favor the United States supporting Israel militarily until the hostages are returned and about half (49%) favor such support until Hamas is dismantled.
So unless the ceasefire results in Hamas disbanding, or more likely, all the hostages being released reality dictates a ceasefire is not ‘this ending’. America wants Hamas to lose like it or not.