Paranoia will not destroy ya
Option 1 "9/11 was just what we were all told it was"
Option 2 "It was an inside job"
What is nice about Option 1 is that there are bad guys 'out there' that have to be fought against. The bad guys in Option 2 are already inside the house with us. "We've traced the phone call. . . it is coming from inside your house."
We get to find out the truth in the next 6 months.
I take it as given that you have looked at conspiracy theories, there are so many to choose from. Not Michael Moore's silly movie, I'm talking about all of the other stuff; false flag operations, "who benefits?" logic, the history of state sponsored terrorism (the USA sponsored sort), etc. If you haven't, a good starting point is the link at the start of this post.
I spent some time looking for opposing view points. Most of what I found was of the sort: "It's not even wrong". Okay. But that needs to be explained, in detail, by people I trust.