You forgot the Christian Coalition and the KKK.

If you look at half these terrorist organisations you realise that there is often no clear line between them, but also no guarantee that groups with the same agenda would work together.
You just have to look at northern ireland where the various protestant groups who should be on the same side are killing each other... or the hatred between various palestinian groups... or the various terrorist/freedom fighters in the old south africa who used to attack each other. But on the other hand they often have to communicate to share intelligence and resources. IRA in south america for example.
This means there is almost no clear target. infact you can find a lot of experts who dispute that Al QUaida as an overaching organisation even exists, many think its just a loose collection of groups with vaguely similar ideals.

The biggest spreader of anti-US hatred in the islamic world is Saudi Arabia... and Osama Bin Laden is a big enemy of saudi arabia because they brushed him off. So do you support SA as they are enemies of your enemy?
The few attempts to set up non-religous governments in the middle east were opposed by the US as they were generally felt to be socialist (and therefore communist in nature), but the one anti-islam, anti-al quaida regime they DID support was Saddam... who is now the enemy.

how the hell you expect to find one coherent target to threaten amongst all that mess is very confusing to me.