Are you completely lacking in empathy? Hamas carried out a heartbreaking and disgusting act of terror. That's not up for debate. Their actions were absolutely indefensible.
But Palestinian civilians, especially children, are not culpable for the actions of their corrupt government. How do you propose that normal people, let alone little children, go about freeing hostages?
If you are ok with Israel 'paying them back' by indiscriminately killing and starving powerless civilians, then there is something fundamentally wrong with you.
Would it be ok if thousands of innocent Israeli children were bombed to 'pay back' the Israeli government?