no way>>>>>>
it was in the past God commanded you, now God will never ask you to kill your kids
This argument may be true for those religions, which have reformed with the progress of civilization, such as Hinduism, Buddhism, and Christianity. But there are some religions, which are still stuck in the stone age.
Okay, now this is legit concern, Sithara.
But suicide order from the leader of sect XY isnt much different than military draft by government. Both essentially claiming authority over life and death of your son, because of power. Forcing you to comply with violence if neccessary.
As to Islam and the debate, if its stone age or not. Scripture of muslims also doesnt blatantly say to kill your offspring, what it does is to give vague description of self sacrifice. Ie. muslims, who die defending other muslims are regardless of any and all of their sins allowed to enter paradise. Some twisted fanatics may and indeed do translate that into sacrificing their children in jihad. It is horrible problem, but not the norm or even standartly taught in many of islams schools (sufis in particular known for non-violence). Logically entire muslim population would be dead in several generations if that was the case.
You are right, that similar concepts are mostly absent in various manifestations of Christianity, Hinduism or Buddhism. Christianity in particular even denying proper church burial to people guilty of suicide.