When a fighting force hides within hospitals, children schools, mosques, in tunnels, takes hostages as bartering. Hamas gambled on Israel not attacking these sites, being protected from prying eyes and scrutiny.
Hamas overplayed their hand, horrified and outraged the Israelites are, rightly so after October 7th 2023. They have decided enough is enough, and will hunt hamas everywhere they hide until they're wiped out
By the looks of the most intense fighting is in and around the hospitals, Israel is correct and justified to fight them in these sites. Hamas setup their positions in/under the hospitals.
Even I can see that Israel will need to be present in Gaza until hostilities completely stop. How long who knows. The game has completely changed, Israel will not do things by half measures anymore. If the Palestinian people don't want peace, there will be no assistance in rebuilding Gaza.