Second, it's logical that you're more likely to find "Gods" of poly-theistic people, than the "God" of the people who believe in the one God, because people who believe in the one God don't picture God as something they can draw or sculpt. There are over a billions Muslims now, have you seen them "draw" their God or "sculpt" him?
Third, you don't even understand what the word Muslim means. You think it means people who follow Mohammad (and kill the people they don't like)..
The second bolded part: Did you pull that out of your arse?
The "Oh Really?" part tells me that you don't know much about Islam, which I actually assumed when you asked about Fitrah.. Believing in one God doesn't mean that you just say: Hey, I believe in one God! Or "I'm a Muslim, I believe there is only one good, and that Mohammad was God's prophet". It's not like that.. Even a Muslim, if he wants to get money so much that he steals to get it, then it means that he followed the money more than following God, or treated money as a "second God". If he loves a woman so much that makes him hurt his mother just to keep her means that he followed that woman more than following God, or treated that woman like a second God. If a Muslim kills somebody because Bin Laden told him to do so, even though that person didn't hurt him, it means that he's following Bin Laden more than God, or that he treated Bin Laden as a second God..
Real monotheism (in Islam) is to let God's properties and only his properties make you make you decisions, regardless of what your body wants, regardless of your desires.. How many people would like to do that. Not many, because the dirt of our desires blurs our judgement.
That's why and how people become poly-theist. Even though religion is natural to humans (because it was and always will be logical that there is a God who created the universe), they begin to twist it to fit their desires, and what they want, and that's how you start to get poly-theism in all kinds of forms.. Whatever they like, they make a God for, whether they know or not, whether they draw it or not.
Also, I repeat, it's stupid to think that how anything is created originally is always the most deciding factor in how it turns out..