Too simplistic. Its also about preventing fanatics from taking control of Nukes or the military.

We already know what happens when Islamic fanatics take over the army in Afghanistan/Iran/Lebanon/Gaza.

If the Muslim Brotherhood took over Egypt (and they did win the elections) instead of a US propped up Military Dictatorship that would just add another layer of chaos to the middle east.

Its not black and white. Plus all sides make mistakes cause the problem is way above everyones pay grade.