Hamas is evil. I think taking Hamas down is the right thing to do, for Israel. No matter how careful they may be, there will be innocents (many children) killed, and in horrible ways. Hamas uses its civilian populace as shields, much as the Japanese did in Okinawa.
It is right to grieve them. It only makes sense to question why. It is an error to say that Israel should not take down Hamas, due to the loss of innocent Palestinian life. This is not a book or movie; there is no elegant solution where only evil is punished and innocence spared.
The US was on the right side in WWII, in both theatres. We ended the Pacific War by dropping nukes on civilian population centers. I do grieve the loss of innocent Japanese civilian life, even as I don’t believe an apology is needed. This is how I rationalize it (and I do acknowledge this may just be a rationalization) - “We were at war with monsters, and to defeat them, we did monstrous things”. In my mind, I can apportion more blame to the Imperial Hapanese leadership than to ours. I am glad I’ll never be asked to make Truman’s decision. I’m glad Truman made it.
Israel is surrounded by monsters. To stay safe, it will have to do things, not monstrous (like nuking), but cold hearted. I will apportion more blame for the loss of Palestinian civilian life to Hamas than to Israel.