Note – I’ve put my replies in bold to make my responses clearer.
Reason #1
The New Testament Writers Included Embarrassing Details About Themselves.
For example some passages portray the disciples as dim-witted, uncaring, and cowards.
This is a literary device that uses the disciples as proxies for bad believer. By doing this, the writers are trying to show believers how they should behave by using the contrast of how not to behave.
Reason #2
The New Testament Writers Included Embarrassing Details and Difficult Sayings of Jesus.
For example in one passage someone call Jesus a drunkard, and in another He was called demon-possessed, another a deceiver.
These details you mention were recording what non-believers during Jesus’ time were saying about him. It is meant to show how he was ridiculed by many. It serves to contrast what the writers want the reader to come away with, that Jesus’ was not anything like what these other people claimed he was.
Reason #3
The NT Writers Left in Very Demanding Sayings of Jesus.
For example: (Matthew 5:28) "I tell you that anyone who looks at a woman lustfully has already committed adultery with her in his heart".
And (Matt. 5:44-45) "I tell you Love your enemies and pray for those who persecute you...
As the book says "They certainly didn't make up a story that made life easier for themselves."
If that is what Jesus really said, then of course they will include it. They weren’t trying to win popularity contests; they were trying to teach believers what they should believe. It also supports the central early Christian idea that being truly faithful was a VERY difficult thing, up to and including the believer’s death.
Reason #9
The New Testament Writers Describe Miracles Like Other Historical Events: With Simple, Unembellished Accounts.
If they made them up it would be likely that they would have used grandiose and extravagant images. The book says the gospels talk about the Resurrection in a matter of fact almost bland way.
You are making an assumption based on 21st century ideas of what is “news worthy”. The writers considered these things to be true and reported them as such. They weren’t trying to write a Greek or Roman tragedy and they weren’t trying to impress outsiders, they were writing a guide for the faithful, people who were already believers, so there was no reason to resort to grandiose and extravagant images.
Reason #10
The New Testament Writers Abandoned Their Long Held Sacred Beliefs and Practices, Adopted New Ones, And Did Not Deny Their Testimony Under Persecution Or Threat Of Death
This proves nothing. The most zealot of believers are converts to a new belief system. As far as dying and being persecuted, so did the followers of Rama, Vishnu, Thor, Zeus, Mithras, and don’t forget the million of soldiers who died for their kings and generals. All that proves is that people will die for things they believe deeply in.
In conclusion, your “evidence” is based on supposition, conjecture and a lack of understanding of historical literary criticism. It certainly wouldn’t qualify as evidence in a rational and scientific inquiry.
Also, you seem to assume that the writers of the New Testament were the actually disciples. Only the Epistles of Peter, the Epistles of John, and Jude (held to be written by James) could in anyway be considered to be written by an actual disciple of Jesus, and even these are only considered so by tradition, not by any actual evidence as none of the original books or letters of the bible are actually known to exist.
The Gospels themselves and the rest of the epistles, except those writen by Paul (who was not a disciple of Jesus and never actually saw, heard or met Jesus in his lifetime) were written by author’s unknown.
The earliest Gospel known to have existed in anything like its current form wasn’t written until well over 100 years after the death of Jesus and all of the Gospels were based on earlier lost writings or oral traditions.
All the New Testament is evidence of is the beliefs and teachings of early communities of believers spread about Asia Minor in the teachings of a man called Jesus during the first few centuries BCE. The majority of modern Christian thoughts and beliefs (anything after say 150 BCE) is actually the result of the teachings of one man and he is not Jesus. He is Paul of Tarsus (St Paul). By rights, Christianity should be called Paulism or Paulianity because it has far more to do with Paul’s own ideas and beliefs than any that Jesus may have taught.
I suggest taking some time and studying the history of the early Christian community, especially it’s writings and how they became the New Testament we know today. And make sure you study ALL of the sources, not just the Christian apologists’ ones.