Why can't religious people agree on anything?

Because *some* religious people believe there's only "One True God" and "One True Religion," and of course it just has to be the one they follow! LOL And so this leads to a lot of disagreement on who's "more right" than everyone else. Each sect of these religions believes it has the "one and only truth," so it kinda kills any hope of finding common ground/agreement, even within their own religion.