Who wrote the bible? New Testament

Now let us look at the New Testament Authors.

Matthew: attributed to Matthew, author(s) actually unknown.
Mark: attributed to Mark, author(s) actually unknown.
Luke: attributed to Luke, author(s) actually unknown.
John: attributed to John, author(s) actually unknown.
Acts: attributed to Luke, author(s) actually inknown.
Romans: attributed to Paul, generally undisputed.
1 Corinthians: attributed to Paul, generally undisputed with some contested content.
2 Corinthians: attributed to Paul, generally undisputed, refers to Corinthian letters not in the bible.
Galatians: attributed to Paul, generally undisputed
Ephesians: attributed to Paul, highly disputed.
Philippians: attributed to Paul, generally undisputed.
Colossians: attributed to Paul, generally undisputed.
1 Thessalonians: attributed to Paul, generally undisputed with some contested content.
2 Thessalonians: attributed to Paul, often disputed.
1 Timothy: attributed to Paul, very highly disputed.
2 Timothy: attributed to Paul, very highly disputed
Titus: attributed to Paul, very highly disputed.
Philemon: attributed to Paul, generally undisputed.
Hebrews: often attributed to Paul, author(s) actually unknown.
James: attributed to a James whose specific identity is disputed.
1 Peter: attributed to Peter, very highly disputed.
2 Peter: attributed to Peter, very highly disputed.
1 John: attributed to John, author(s) actually unknown.
2 John: attributed to John, author(s) actually unknown.
3 John: attributed to John, author(s) actually unknown.
Jude: attributed to a Jude whose identity and authorship is disputed.
Revelation: attributed to a John whose identity and authorship are disputed.

I got most of this information from Wikipedia. If you have any questions about a particular book, I suggest you research it yourself. How many books of the New Testament do most scholars consider undisputedly authored by definitively known persons? Going by this list, seven, maybe eight. Those are all written by Paul. 7/27= approx. 26%. Paul says he recieved all his info about Jesus from personal revelation. How reliable is that? How many people would you believe if they told you they had a revelation from a god, and that you should obey it? Why should you believe them if you have not had the same revelation?

The majority of the content of the New Testament comes to us from people without credentials. A geat deal of it is contradictory. Most of its events have no, contemporary to that time, extra-biblical evidence to support that they actually happened. Most of the people mentioned in its pages have no, contemporary to that time, extrabiblical evidence that they actually existed. Not one of the books themselves claims to be divinely inspired or the  word of a god. Why should we take these writings so seriously that we would give our time and resources to promoting them as divinely inspired/authored? Not to mention condemning those who don't.