Just a few questions

I woke up this morning to see the latest news about the suicide bombing in Israel, which Hamas states is in retaliation to the killing of 21 Palestinians. Isn't it enough that we have natural tragedies like Katrina and tornadoes and tsuamis? Doesn't humanity see enough destruction to do them a lifetime in disasters and accidents? Do we have to keep massacring each other to create more orphans and widows and childless parents? My heart just breaks for the world.