I agree that some of Jesus' teachings are excellent. The problem is that churches are a human institution and are hence vulnerable to corruption - which is exactly what has happened over the centuries. Unfortunately, people are quick to form tribes, and difference religions are an excellent way to facilitate this. Partly, I think this is because many people have only a vague understanding of the religion in which they profess to believe.
Churches also exploit their status as 'good' and 'holy'.
While lots of religious charities do good work, there are also lots of secular charities that do equally good work. I agree that it is possible to have terrorists and atrocities without religion, but I think you get more of them with religion. Let's look at the worst conflicts in the last 30 years: Northern Ireland (catholics vs protestants), Iraq (christians vs shia muslims vs sunni muslims), Afghanistan (christians vs muslims), Somalia (muslims vs everyone else). In fact, I challenge you to name a significant terrorist attack in the last 30 years that has not involved some form of religious conflict!. I guess the Korean war (though it's older) is an example of a war that was driven by secular ideology, but I still think that religious conflict is the most common.
conventionality is to convention as morality is to moral.
Also, wrt your sig. Wanting to believe you're special doesn't make you special - the universe doesn't work that way. If you're just matter, but believe you're god's creation, it doesn't matter - you still don't matter!