Well, Islam is a religion, and as such, I think it'd be better not existing.

How it compares to other religions? It's similarly close-minded and authoritarian as the other "religions of the book" (judaism, christianism, and similar religions).

I think its main problem is that there's a lot less muslims ignoring most of their religion than christians or jews. I mean, in most modern societies, people are massively non-religious, or partially religious (living as if many or most of their religion's precepts didn't exist), and that's for the best.