Do the differences ultimately matter?

Boy, am I in a mood tonight. I've been reading up on Islam and Christianity, similarities and differences, and right now I'm so confused I don't know *anything*. When I started, it was just curiosity; what is all the fuss about (Islam)? Now, it has me questioning the religion in which I was raised, but not feeling very certain about Islam, either. It's like neither of them is a definite "yes" or "no" any more. There's no sense of peace for me, either way. I'm very frustrated... : (

Now I'm thinking, do all the differences really matter? Can't all of us (Christians, Muslims, and Jews) be right in worshipping the same God, and everything else just minor details? Could it be that there is more than one true and right path to the same destination?

I've given myself a headache, so I'm going to eat dinner and try not to think about it any more tonight.