I'm confused by this post. What are you trying to say? Your point appears to be that suicide is allowed by jihadist groups but discouraged by Christianity. But actually suicide is haram in Islam too.
Wiki is actually pretty good on this so I'll let them talk.
For context, it is also worth being aware that suicide bombing by Islamist groups did not exist prior to 1983. It is a remarkably recent historical innovation which does not find support in classical sources. Needless to say, such actions are condemned and rejected in the strongest terms.
My apologies Byzantine Fanatic I did not know this taboo was part of the Quran as well.