the christian bible also forbids killing and where does that take us ?
Absolutely. You can also say the bible condones killing people for any number of reasons. I don't want to get into
a theological debate, I'm not a fan of Christianity anyway, I disagree with it. But... Christianity is DEAD. Most Christians
don't take the bible literally anymore and they twist and turn the bible to fit any type of lifestyle they prefer.
Islam is a much more vital religion and most muslims will say not a letter in the Koran can be changed. Not to say many muslims don't live sinful lives according to their scriptures anyway but when pressed they will say what the Koran says is correct and can't be altered.
Take a Christian and insult his religion and nothing happens. Insult islam or Mohammed and the muslim's eyes will turn black with rage and you should be careful not to get physically attacked. Seen this many times personally.