Another thing to consider is that the preterists may be right, in that the prophesy in Matthew refers to the destruction of the temple in Jerusalem by the Romans, which did occur before that generation passed away.
Not unless the Bible is wrong...Just an example:
Mat 24:21 For there shall be then great tribulation, such as hath not been from the beginning of the world until now, neither shall be.
The destruction of Jerusalem was worse than the Flood??? How about WWI or WWII and Viet Nam, Korean War...Six million Jews at the Holocaust...How about the destruction of Carthage under Scipio??? What about the destruction of Kiev under Ghengis Khan??? The Crusades???...Atom Bombs in Japan???
I can't wrap my mind around that, at all.
Doesn't fit my construction on reality, at all.