Then you have no explanation for the evaporated steel either. Thank you. Do continue to criticize all of us trying to find answers to questions that
you yourself can't answer, and are apparently content to leave unanswered.
But I'll offer you my opinion why the towers needed to be demolished;
Larry Silverstein, who signed the lease on the WTC 6 weeks prior to 9/11, was trying to collect full insurance payouts for
each building that was demolished. If the 3 WTC buildings hadn't collapsed, he couldn't have collected nearly as much in insurance money, as buildings 1 & 2 would have been salvageable, and building 7 wouldn't be damaged at all without the collapse of 1 & 2.
"Silverstein contended that the two jetliners crashing into the twin towers about 15 minutes apart should be considered two separate events, which would allow him to collect the maximum from the insurers for each tower, as much as $7 billion.
Silverstein contended that document had been supplanted by a second form which did not include a definition of "occurrence," opening the door for collecting separately for each tower. But attorney for Swiss Re, Barry Ostrager, called that a "fanciful claim."
CNN.com - Verdict in 9/11 insurance battle - Apr 29, 2004
Maximum coverage for Silverstein's buildings was $3.55 billion. By demolishing the buildings, he then believed he could sue for twice the amount, based on separate attacks, which only works if the buildings are unsalvageable.
The government stood to make much more than Silverstein did however; just the war in Iraq alone cost $2.7 trillion.
Huh, really? Would the American people have supported razing the Middle East without the WTC buildings collapsing? Absolutely not. Without the collapse of 1,2 &7, you'd end up with enough support for the invasion of Afghanistan, but not Iraq.