9/11: Inside Job or Coincidence?

Before I start discussing this hot issue at hand, I just want to make it clear that I am an American and I love my country dearly. This can be a sensitive subject for some so I just wanted to make that clear.
Now, September 11, 2001, I can remember vividly. I remember exactly where I was and what I was doing. I was in the 5th grade. We were one hour into our daily routine when the news had spread of an airplane crashing into the World Trade Center. I remember hearing the teachers speaking amongst themselves nervously, and the television was turned off after the second plane hit.

After a few weeks, the United States launched itself into a war with Afghanistan and the Taliban. With heavy media coverage and propaganda, American citizens were largely in support of the Bush administration. But with the release of the official 9/11 Commission Report, many people began to look into the incidents more and question the government.
When I first saw the news coverage of the attacks, I was completely convinced by what the government said. I was extremely young and easily persuaded. I believed that the War on Terror was the right thing to do. I was really intrigued by the whole situation, because I recognized how huge this event was for our country and from a historical view. But with my experiences and age, I’ve realized how subjective material is and that information like this should be analyzed and questioned.
So, with that said, I think there are a lot of things concerning the 9/11 terrorist attacks that are too “coincidental” to be believable. I do not fully believe every theory out there, but I think there are definitely some aspects that need to be analyzed and explained.
First, the World Trade Center was designed to withstand aircraft impact. It had extremely strong support beams throughout the building. Also, it is the first steel high-rise building to collapse by cause of “fire”. When reviewing the footage of the towers collapsing, the building collapses directly into its own footprint. This indicates that explosives were possibly in the building previously. And the collapse of the 7 World Trade Center building,, which is not even directly connected to the two plane-struck buildings, was very unusual and like a result of demolition.
The man who leased the World Trade Center complex, Larry Silverstein sued his insurers to get the attacks to count as separate events so he would receive double the money. Also, where was the Air National Guard, 80 minutes after the attacks began, to defend the Pentagon, possibly the world’s most secure air space? How much money did Dick Cheney’s corporation Halliburton make when the United States went to war? How is Iraq connected to Afghanistan and the War on Terror? And why did the government invade Iraq without a Constitutional declaration of war?
There are many more things to consider, but I’ll leave it at that for the time being. I’ll be happy to further discuss this in comments and later blogs.