I would normally tend to agree with you, a single creator could decide to do things the way you suggest. Except that I have the following additional information which flat out precludes that option:

Neither the god of Judeo-Christianity nor the god of Islam will tolerate any other gods. Further, they won't tolerate each other because they each tell mirror-image stories. So to make the statement you just made you have to eliminate those two gods as false gods and with them the accepted beliefs of 3 billion people. Then you can, perhaps, say that about all the other belief systems, assuming they don't have similar objections.

Jesus explicitly states the He is the only Way and there is salvation in no other. Pretty intolerant, I know, but when you are God you get to make the rules. :o)

For the record, here is what Jesus says. Reject him for being intolerant if you must, but don't say that he is part of a smorgasbord of equally acceptable belief systems:

For God so loved the world that he gave his one and only Son, that whoever believes in him shall not perish but have eternal life. For God did not send his Son into the world to condemn the world, but to save the world through him. Whoever believes in him is not condemned, but whoever does not believe stands condemned already because they have not believed in the name of God's one and only Son. - John 3:16-18