I've always been skeptical of the official 9/11 report, and am very curious about WTC building #7. It did go straight down into its own footprint, which should give anyone pause. What made that thing fail and in that manner?
Something that bothers me as well is those who have a knee-jerk reaction to conspiracy theories by instantly claiming the theorizers are kooks, crazy, paranoid, etc.
Whether 9/11 was a government conspiracy or not, it's important to understand that real conspiracies exist and past conspiracies were proven/admitted. Some examples in which hundreds, thousands, and even hundreds of thousands of people could keep a secret:
Pearl Harbor (the Japanese conspired to attach Hawaii, and they somehow kept it a secret from the outside world. It involved thousands of Japanese military).
The Manhattan Project: We built a nuclear bomb and the information stayed contained. We even were able to get that bomb to Japan (twice) without anyone knowing.
D-Day: Tens of thousands stormed the beaches; hundreds of thousands involved in the planning. With that many people involved the Germans should have known the specific day and time, not just a general prediction of being invaded through the French coast.
In summary, don't be so quick to dismiss the various theories if they are grounded in logic, reason, and science. At least consider the evidence before rejecting a claim. Likewise, always remain skeptical as well (which is not the same as denial. Skeptics are willing to listen. Deniers are not).