First off, the miracle of the resurrection is the only rationale conclusion for the origin of the Christian church. Even renowned skeptics are beginning to acknowledge this issue. Secondly, the gospels and Pauline Epistles were written by the authors an witnesses or one who had access to witnesses (in John Mark And Luke's case) and were written within one generation after the cruxifiction of Jesus, unlike the Gnostic Gospels. Do your research and stop making the same tired arguments that have already been proven inaccurate years ago.
Actually it is not. Everything you said is basically false.
First off, if you look at the idea of the resurrection (even Paul goes into this) it was with the idea that Jesus's resurrection was the beginning of the general resurrection. Paul even goes as far as to claim that you can't have the resurrection of Jesus without the general resurrection.
If you look into the origin of the Christian church though, you would see that it started off as a Jewish sect, with Jewish beliefs. If you really want to understand the original Jesus movement, you must first understand the sect of Judaism that Jesus belonged to, what they taught about the resurrection, and equally important, what they believed about the Kingdom of God.
However, the idea of the resurrection was necessary to the Jesus movement. That does not mean it happened. The reason it was necessary is because Jesus was supposedly the Messiah. As soon as he died, he was disqualified from being the Messiah, meaning he failed. That meant that the followers of Jesus had to rationalize his death. They did so by claiming that he was resurrected, and thus was the beginning of the general resurrection.
A key point though is that the general resurrection never happened. The Kingdom of God never came. Everything Jesus said was going to happen within a generation never came to pass, and once again he was shown to be a failure. Because of that failure, once again his message was reinterpreted, and rationalized. If you look at the origin of Christianity, you will see this gradual change. And I'm not talking about the book of Acts.
Now the authentic Pauline epistles may have been written within one generation, but that was still around 2 decades after Jesus died. And it must be also stated that many of the Pauline epistles were not written by Paul.
As for the Gospels, Mark being the earliest, was written around 4 decades after Jesus died. The author of Mark, we now know, was not Mark. The Gospels were first circulated anonymously. It was not until later dates that they were accredited to people who supposedly knew Jesus or were somewhat closely associated with him in order to raise their credibility. Historically though, there is no credible evidence to suggest that the authors who are accredited with writing the Gospels had anything to do with them. Especially when you consider just how long after the fact they were written, as well as how far distanced some of the Gospels were.