Why don’t the gospels mention the destruction of the temple as history?

Ah, so Mark, Matthew, and Luke DO mention the destruction of the temple, they just do it in the future tense, not past tense. Let us put ourselves in the place of the late first century. Our Messiah has just been killed. The temple has been destroyed. What power do we have left? We have story. Story is incredibly powerful.It kept Judaism whole throughout years of political rise and fall. Here in the late first century, we can write a story that is set in the past. We can use this story to give a new context to what we have experienced so as to bring a glimmer of hope to dreary times. Our messiah has been killed. Let us give this horrible event a happy ending: the resurrection. Some of the earliest versions of Mark (and early is thought to be most accurate--right?) conclude with Chapter 16, Verse 8. This is to say it concludes with an empty tomb and a promise (hope) of a risen Christ, but no first hand experience. Later versions (more questionable according to the apologists on this forum) report that the Eleven saw the risen Christ at the table with them. (This addition gives the impression to the reader that the hope is already being fulfilled.) The story becomes more moving with this addition. We followers of Jesus were supposed to be the winners. We were supposed to have the right religion. But, our messiah didn't deliver us as we had hopped. Were we wrong about the messiah? Rather than give up hope and admit error, let's reframe the events of our lives so as to find a hidden meaning -- one that we, the elect, know. To do this, we story tellers can retrospectively put a prophecy of the temple's destruction into our Messiah's mouth to make Him seem prescient. This makes it seem like he knew what was going to happen and that there is a reason for it. With this spin it doesn't look like we were wrong, but just caught in the middle of a time of tribulation that must take place (according to the same man who predicted the temple's destruction) before we will achieve our eventual reward. The Bible is not a no spin zone. I don't fault the early Christians for doing what they needed to do to get through the dark night. Modern Christians do this too. Anxiety makes those who lack confidence cling to weak positions.