Asking Muslims themselves is certainly the best way to have a handle on what's going on, 2KO5GT, and they shared their opinions with you just as they do on many of their web sites. They are not too shy on explaining the situation, but the West often has difficulty understanding it. In fact you'll often see non Muslims describing Islam as a "Race".
It seems that many people believe Islam, because they think of it as a religion, is just another form of Christianity, where you can opt in or out and you're pretty much left alone. You've described the religion as many others have, and these numbers would include all Muslims.