If you're really serious about understanding why any group does anything, or what they want, there is a way to find out. You have to do some research into it, then take their side in a civil discussion.
If you aren't willing to do that, then you're not serious about it.
Firstly, let's look at the original statement:
"Why would a buncha terrorists ill equiped and spread out around the world want to take on the mightiest country in the world. I ask myself that qustion every day, dont you?"
Is this a true statement to start with? If you're referring to Al-Qaeda and September 11th, then it should be specified.
If you're referring to someone or something else, then there is no reason to ask yourself anything about it every day, since no one else has attacked the US.