If Jesus did, in fact, rise from the dead, why did he skulk around and, at most, do a few party tricks before heading off to Heaven? For all the effort and the meaning of his rising from the dead, wouldn't the point have been better made if he had appeared to some people who weren't already believers? If, say, he had shown up at Pilate's house, the Sanhedrin and the Temple, Christianity would have topped the polls, rather than faced such a long, hard struggle.
Certainly something big happened in Jersualem in about 30 AD. Still, I'm pretty sceptical of the idea that God only revealed his word to semi-literate desert wanderers in one forsaken corner of the world, ignored the folks of China, India and America (and, in fact, shows no sign of knowledge of them, or of anything or any place not already known to the various "prophets") and chooses to play a sort of hide-and-go-seek with the rest of us for purposes unknown.