Christianity and Islam long ago abandoned the true prinicples they were based on. Now they just kill each other.
That's not true. Look at all the Christian churches for peace. Of course some modern day Pharisees have abandoned that and gone violent, but I don't care about them.
As for Islam, it was founded on violence. Comparing the two religions is rather pointless in this regard. Look at this way:
-How many people did Jesus kill or conquer?
-How many people did Mohammed kill or conquer?
Islam was founded on peace dumbass. If Muhammad had not had the small battles he had, the Bedouins would have continued their disastrous and brutal wars that were destroying the region. The ultimate goal and result was to create a united peaceful Arab people free from war.
Also, you seem to brush aside the fact that there are countless mosques that support peace. But neither these nor peace churches have become dominant in Muslim and Christian cultures.