Religion claims absolute truth, and by extension absolute power. People are not nice when things get absolute..
That's something of a straw man fallacy. There are religions like that, but they're not all like that. It's like you see something's shadow and think you know all about what casts it. There are religions that cast no shadow.
Name on religion that claims no absolute truths...
Your problem is that you're trying to understand religions like they're doing the same thing that science is. You're equating things like the creation myths, and where we go when we die, as representative of the whole religion.
Although it's not a religion, I'd say that the Free Masons, from what I understand of them, come closest to representing what I see religions as. They're about metaphor, stories, ceremony, community, etc. It doesn't matter if the stories are "true" in the sense that you're thinking. The lessons they teach have "truth". If they didn't the religion wouldn't exist, because it wouldn't offer anything to its believers.
With Christianity, it doesn't matter if Christ was a divine figure or not. It in no way changes the "truth" of Christianity. With Buddhism, it doesn't matter if reincarnation occurs or not, Buddhism still has "truth" in its examination of the human condition. And probably what confuses scientifically minded people the most is that when it comes to spiritual truths, two ideas can be in direct conflict and still have truth.
So basically,
all religions
have absolute truths. It's just not in the way you're thinking.
edit: wiki has come in use one more.
Life stance is pretty close to what I mean when I talk about religion.