The case against Islam may be closed, but that ignores the wider picture. OK, Islam is a false religion but at least they believe in one God. As has been pointed out, Allah "God" is the same word as Hebrew Eloh, "God".
But in the Old Testament this Hebrew word is always in the plural "Elohim" meaning "gods" not "God". That's because Hebraic religion was polytheistic and many traces of this are still in the OT.
Here's some examples from the Jewish Talmud. You won't find teachings like these in the Koran:
Gittin 57a. Says Jesus is in hell, being boiled in "hot excrement."
Sanhedrin 55b. A Jew may marry a three year old girl (specifically, three years "and a day" old).
Sanhedrin 54b. A Jew may have sex with a child as long as the child is less than nine years old.
Kethuboth 11b. "When a grown-up man has intercourse with a little girl it is nothing."
Yebamoth 59b. A woman who had intercourse with a beast is eligible to marry a Jewish priest. A woman who has sex with a demon is also eligible to marry a Jewish priest.
Rosh Hashanah 17a. Christians (minnim) and others who reject the Talmud will go to hell and be punished there for all generations.
Shabbath 116a. Jews must destroy the books of the Christians, i.e. the New Testament.
For example Dr. Israel Shahak reports that the Israelis ceremonially burned hundreds of New Testament Bibles in occupied Palestine on March 23, 1980 (
Jewish History, Jewish Religion, p. 21).
Yet everyone talks about our "Judeo-Christian" tradition. There's no such thing. It makes as much sense to talk about "Judeo-Christianity" as it would to talk about "Islamo-Christianity".
Islam may be evil, but Judaism is worse.
That's why we are CHRISTIANS.