> Considering things in this perspective, is it so far-fetched to at least consider the possibility that 9/11 was a false-flag attack?

Yes, it would be completely far fetched and cretinous. You would have to completely ignore the history of bin Laden's interactions with American and the CIA, the attack on the USS Cole the year before, and the 1993 World Trade Center bombings.

The Bin Laden and Bush families go way back. FBI Agent Robert Wrights press conference is a good place to start. http://911encyclopedia.com/wiki/index.php/Robert_Wright

Also the calls Emad Salem (1993 WTC Bombing) recorded with his FBI handler where he talks about who built the bomb.

Considering things in what perspective? Everything listed here about the US was either just a proposal that never came to fruition, or not actually a false flag attack (a grunt trying to cover up civilian casualties by planting weapons on them, as reprehensible as it is, is a far cry from a false-flag terror attack on your own people).