The problem that many have with Jesus is that he's the messiah, not their vindicator. People rarely want salvation and, in all honesty, "saving" people can be manipulative as a person is in dire straits to cast aside their ideas of self to accept the guide of another wholly. Seems a bit predatory.
Most people follow not out of true belief or a true desire to understand, but out of a social benefit to conformity. This is not to say that all the church has done is bad, but that piety to religious doctrine and dogma benefits the church moreso than it leads to any kind of personal enlightenment or union with the divine.
And therein lay the subtle problem at the core of the church. Which is more important? Bringing man closer to god, flawed though he may be - or getting man to do all the things god says to do and abstain from all things god says not to?
When it is said that works do not earn one entry to heaven, this is often twisted to still mean that conformity earns heaven, not something as difficult to pin down as seeking the divine.
But, of course, from its mouth shall come many such profanities.
Which brings us back to the problem many people have with a messiah… Very few people expect that messiah to look at them, facepalm, and tell them they need to rethink things. Almost everyone expects the messiah to, if not take notes on how to save the world, to at least cheer them on. I, myself, am not immune from it - it would be very difficult to accept an argument that I have the basis of my theology wrong. A theoretical second coming who was not taking notes or cheering me on would find I require extensive debate to sway. There again, my eyes wouldn't necessarily glaze over and I burn my own messiah at the stake…. Which is what is liable to happen if many religions actually met their messiah.