It's even worse then that. Fundamentalist types tend to pick and choose which parts of scripture they want to believe.
Many ignore the principle message of Jesus, the whole love everybody, care for the sick and poor, and accept everybody, even if they disagree with you.
But yeah, I agree. I don't know how people can possibly say that *their* god or belief is the right one, and others are wrong. How they can say that the old testament is right, while the ancient Greeks and their Pantheon of deities were ridiculous. It's just stunning.
There's no point in trying to find logic or reason in it though. Christians spent centuries persecuting and kill Jews, and yet their whole religion was founded by a Jew who said you should love and accept everyone, and the entire old testament basically IS Jewish. It just makes no sense at all. I gave up a long time ago trying to figure it out, I just accept that there's a significant part of the human brain finds the idea of the supernatural very appealing.
What's worse, is that my sister was always kind of an outsider, and when our family moved to Texas, she finally found acceptance in evangelical religious groups who were happy to bring her in and tell her what to believe.
Now she goes around the world on a ship, selling religious texts to poor people the world over, converting them to her brand of Christianity. Ah well. To each their own, as long as they keep their preaching out of our classrooms.