Islam is not a religion anymore than Nazism is a religion.
You can't redefine what's in the dictionary.

You don't have to like it but it is a religion as much as Christianity.
If you like religions where you are commanded to behead people, rape children, openly lie for your cause, commit suicide, kill, rape and pillage without mercy, dash babies heads against a rock in front of their mothers, sell people in to slavery, and burn people in gas ovens, or drown them in cages, sure, It's a religion.
Only Hitler and allah are your gods. And they aren't very nice people. In fact, I'd say they are quite Devilish, wouldn't you?
Satanism is a religion, so if you want to argue that Muslims are worshipping Satan, then I will agree that it's a religion.