Even if you believe everything else about what happened on 9/11 (which is a massive stretch), there is no way your eyes can watch WTC7 coming down in free fall and your brain not think "that's a controlled demolition". This is the no brainer for me and I only found out about it 4 years after it happened.
The problem people have believing this is that they then have to:
a.) admit they've been played for a fool; b.) admit that they're political party invaded a country on a false reality (we are still there!); b.) admit some of their religious prejudice is based on a false reality - very very very tough.
Then there's the who, how and why.
Ahhhhh it's all too hard, you're just a conspiracy theorist, tin foil hat wearing nutter.
Ohhh here's Justin Beiber and Kim Kardasian having sex - watch it here: