Most probably, Jesus was a follower of John the Baptist, and possibly took over leadership of John's cult after that man's death. (Some scholars even think the two were the same guy.) Years after his death, Paul elevated Jesus to Son of God status.
As a philosopher, Jesus had nothing new or interesting to say. "Be nice to others. Give to the poor." All of his ideas had been expressed elsewhere--and better--before.
You've pointed out the reason I'm no longer Christian. Most Christians seem to worship the firemaker instead of celebrating the fire. Jesus' message is far, far different than the intolerant ass-hattery of zealots today. The famous stories of him dining with sinners (prostitutes,
tax collectors, etc) seem to fall on completely deaf ears today.
Another strange point: Why would Jesus consider a tax collector a sinner, yet say "Give unto Ceaser what is Ceasers, etc"? Seems to me some King added that line in during the 31st re-write-- I mean "Translation"-- I mean, "Edition" of the bible.