Every single palestinian terrorist authority through the decades has placed gaza's and the West Bank's citizens in harms way. The same cowardice as employed by ISIS/al-qaeda in Iraq and various militias in Libya. A considerable number of the citizens of gaza support the actions of hamas and hezbollah and therefore remain in place by choice, providing support where they can. You could ask what sort of parent allows their children to be exposed to this level of risk and refuse evacuation to safety. Mind you, that Egypt and Jordan initially refused to open their borders to refugees didn't help with their plight. Why was that?
You should also give thought to why hamas et al don't surrender this unwinnable war. Or are they valiant and heroic 'freedom fighters' fighting honourably to the last bullet, in your opinion? Those terrorists are also responsible for a great deal of the civilian casualties not only by the use of human-shields but also by denying proper distribution of food, water and essential medical supplies, from bandages to life-saving drugs.
When Israel inadvertently kills women and children it's a tragedy, for the terrorists it's part of their strategy.