There can't possibly be two valid points of view on this?
Actually, no.
The Palestinians have had too many opportunities to have a state, starting with the original partition plan. When you indoctrinate kids to kill the other person, when you set your rocket launchers in the middle of civilian population to maximize your own civilian casualties if there is retaliation, when you deliberately target civilians, you are the bad guy.
At some point, the world has to truly admit to itself that Israel is the humane, restrained nation here. Let's face it, the IDF could get up and flatten Gaza and still be home for bagels and lox.
You realize that even at the financial and human cost, Israel was about to start a ground war. The only reason for that is because only boots on the ground can be very selective of targets.