This idea that Hamas is the only problem and they just need to be “eliminated” is so short sighted and shows a complete lack of understanding of the situation. Do you really think that if Israel kills every member of Hamas, Israel can just leave and Gaza will be free and never attack Israel, because that is pure fantasy.
Hamas is a symptom of the underlying issues not the cause. The cause is cycles of assymetric violence, deprivation, and dispossession caused by Israel. Until those issues are solved there will always be orphans of the last conflict with no hope for a better future willing to commit acts of violence against the state they blame for there horrid conditions. There will also always be some organization, if not Hamas then possibly something worse (Islamic jihad), to direct and amplify that anger.
This also assumes Hamas can be eliminated, which is a big assumption. They’ve already started doing guerilla attacks in the previously “cleared” north. Support for Hamas has gone up since the war started and you can’t kill a political movement with bombs, the u.s. learned that with Afghanistan. The only way is to remove the supporters of that movement, ethnic cleansing, which is Israels true endgame, because they know as soon as Hamas is eliminated another organization will just take its place.