If we are "genetically" inclined toward murder, then perhaps pissing us off is a really bad idea.
Basic logic such as what you have just expressed always seems to elude profoundly, breathtakingly stupid and barbaric people. They seem to be up against a steep learning curve of their own making. It should be obvious to everyone on the planet by now that the United States and the other free nations are the nicest, most gracious and most benevolent folks that one would care to meet, but they just insist on pushing us....even nice people don't like to be pushed, and if it takes the deaths of a billion Islamists to drive that point home to them, the I say bring it on and don't make any plans in your engagement calendar for next week.