There is physical proof that lots of people (tens of thousands? More?) were given the crown of thorns and crucified, then buried in a shroud (you aren't crucified in a shroud, and there's no way to identify a shroud as the "Shroud of Turin". But big deal, the Romans crucified slaves that tried to escape, and theives, and just about everybody else who pissed them off.
This was at the time, the worst, punishment one could receive for his crimes. Christ, the son of God and man, walked blamelessly in the eyes of God. He walked in righteousness, and did everything that was asked of him. He also died for our sins, in the worst way imaginable, even though he did nothing to deserve such a fate. The point is that he suffered for our sins, and all who believe in him shall be forgiven of their sins. We are no longer bound to the laws of the Old Testament, but we have entered into a new covenant with Christ.
Interestingly: the Romans did NOT crucify (or even hate) people from most other religions. If you wanted to worship your own god or God, that was fine. The only reason they eventually started hating Christians is because Christians were running around declaring that their God was better and Rome's gods suck and everybody else was wrong. The Romans took exception to their intolerance. But in general, Romans loved other religions.
And this promotes good or evil? We were all given free will, and we all (good and evil) have a role to play in this world. Christianity at its fundamental doctrines state that we are to love everyone as ourselves, believe and love the one true God, and be lowly and meek people. We are not to boast, so I do not think our ancestors went around stating that our God is the best and the rest suck. They simply went around and taught what was given to them by divine inspiration, and God did the rest. You are either meant to see Him for what he is or you are not.
And incidentally, if Jesus was destined for heaven, and his body disappeared as a result, why don't ordinary people who go to heaven have their bodies disappeared? That doesn't seem to make sense to me.
Human bodies do not disappear because the Day of Judgment has not arrived. When Christ was raised from the dead, people from the ancient world were raised and they entered Heaven. We on the other hand have not reached our divine appointment, and thus our bodies remain in this world.