I'm frightened of eggs, worse than frightened, they revolt me. That white round thing without any holes have you ever seen anything more revolting than an egg yolk breaking and spilling its yellow liquid? Blood is jolly, red. But egg yolk is yellow, revolting. I've never tasted it.
Every song has a composer, every book has an author, every car has a maker, every painting has a painter, and every building has a builder. So it isn't irrational to take this simple logic a little further and say that nature must have had a Maker. It would be irrational to believe that it made itself.
Somewhere along the line, organized religion stopped being about faith, and started being about who had the power to keep the faith. You said that the purpose of religion was to bring people together. But does it, really? Or does it-knowingly, purposefully, and intentionally--break them apart?