My point was not that my friend would be offended, but that my friend does not find Islam to be as nonsensical as you do. He know his religion better than any outsider, and he undoubtedly has good reasons to follow it.
In general, I am reluctant to brand any religious beliefs as "internally inconsistent" or "nonsense", especially when I see that many intelligent and well educated people believe in it. Moreover, I would rather learn about a religion from its adherents rather than its opponents. (One would not expect a Nazi to give a fair account of Judaism, for example.)
Well, go get a copy of the Koran and read it.
Before you read, pray for guidance and direction from God and/or Christ, if you are a Christian. Ask for protection in the event anything in it would lead you astray.
All this may be true, but ISLAM (the momolith seen by the West) is fracturd with FAR more splits in it than Christianity seems to have in it.