Juncaps my friend ... the Bible answers your question ...
Ephesians 6:12 says -
"For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places"
The war going on in the world is Spiritual as much as it may seem physical. There is a spirit behind islam which makes it violent. it doesn't make sense to think that normal people would be willing to tie bombs around themselves and blow themselves up and expect to go to heaven. This is a deception. Normal people dont think like this, i sure wouldn't. So ... whats behind this deception?
2 Corinthians 4:4 Says ...
In whom the god of this world hath blinded the minds of them which believe not
Who is the god of this world?
Satan.
He is the one responsible for the deception and lies in this world.
John 8:44 - "When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it."
Satan's native tongue is lies. All he speaks is lies. There is no truth in him. Look how he has deceived Islam, all of a sudden popped onto the world scene in the form of an "Angel" and gave a guy a book, and started a whole new religion. Well ... Satan's trap sureh as worked, hes got over 1.2 Billion souls in his hands on the road to hell. Satan always leads people away from the truth.
I beleive the violence behind Islam is a Spirit, when muslims fast during the month of Ramadan, they get closer with demons, the Spiritual bondage and demonic influences over their lives increase. Some may find this offensive or hard to beleive, thats your problem, not mines.
See this website of why these guys left Islam, its quite interesting to see their views ... http://www.apostatesofislam.com/main.htm
also be sure to click here ... http://www.apostatesofislam.com/media/stoning.htm
The above link is a video which shows 3 people who left Islam being stoned to death for 'apostacy'
Does it really sound like to you brother that the true God would order people to be killed who leave following him? That wouldn't be considered free will, and if there is no Free will, then that god is false, because the true God would never order people to kill others who leave Islam.
Doesn't sound very godlike to me, sounds like a whole religion full of rituals, tradition, bondage and fear. Thats not God is about. The God of the Bible is Love.
Great question you asked about why Islam is violent. Please leave views about the video of those people being stoned. Some muslims i talk with at college used to deny that Islam orders the death of people who leave Islam, after they saw the video ... They beleive that its real.
Its quite graphic, theres 2 versions, one soft version and one un-sensored one i beleive.
Have fun!