I have read the Quran and the Hadith. I have lived in a Muslim country, a devout one in fact. I grew up around Muslims. At the moment I know at least half a dozen Muslims, they're good people and pretty liberal. Many are non practicing or agnostic. I have also studied Islamic history, specifically that of the Abassids, Safavids and Qajars. I've also skimmed over the history of the Mughals in India.
I get the information from my own personal life, from the people I've met, from history and from the Quran. I also know a lot of what happens in certain Islamic countries if you question. If you show dissent.
How many ex Muslims do you know? How many minorities do you know in Muslim countries? How many people do you know who come from autocratic Islamic states? How many people do you know that have suffered under autocratic Islamic states?
In my posts I am referring to mainstream Islam, which is part religion/part socio-political movement, not Sufi sects and Ismailis. If the majority of Muslims lived like the latter groups, the world would be extremely different.
The people I know are the most oppressed religions minority in the world, the Baha'is and I am aware of all the atrocities committed against them. But you ask the Bahais and not one of them will tell you that Islam is the cause of terrorism or their own oppression and of all people they know as it is them who are killed, tortured, imprisoned, their cemeteries vandalized, their shops closed, entry into universities refused.
Yet they fully uphold and defend the truth of Muhammad and the Quran because they know that Islam has nothing to do with their persecution. It's always the government or corrupt religious leaders who use their position to hurt the Baha'is because of jealousy or fear that all Iran will become Bahá'í.
These corrupt leaders who promote terrorism use Islam and the Quran as an umbrella because people believe everything their priests say and do not question.
Things like the Inquisition were abominable where heresy was rewarded with burning at the stake if found guilty. So Christianity had its beheadings and burnings and yet the Bible is still seen as Holy and Good despite verses like these which have no equal in the Quran. Why? Because people asked questions and the corrupt will kill and destroy once they are found out.
Verses in the Bible are very violent too but they were given for that time just like the Quran was for 1400 years ago not now.
1 Samuel 15:3
Now go and completely destroy the entire Amalekite nation--men, women, children, babies, cattle, sheep, goats, camels, and donkeys."
My point is every civilization has gone through periods of violence. Hitler wasn't Muslim and we westerners who used to pride ourselves on our Christian love had no qualms disfiguring innocent civilians of Hiroshima and Nagasaki or the Vietnamese with Agent Orange.
Man has committed atrocities throughout his history. It's been the nature of man to be prone to settling things by violence.
I don't blame Islam or the Quran for terrorism just like I don't blame the Bible and Christ for the inquisition and there are terrible verses in the Bible that were used to incite violence in the Crusades such as
Psalm 137:9
Happy is the one who takes your babies and smashes them against the rocks!
And many others and at the siege of Jerusalem in 1099 they did such things.
If we're going to blame anyone I would blame corrupt leaders of any age or religion or political aspiration as it is those with power that are the instigators.
The ordinary Christian or Muslim are no danger to anyone and Hitler proved that one does not need to be inspired by a Holy Book to kill by the millions. For he had no Quran and wasn't it nearly 7 million he massacred? And Stalin?
People blindly following without questioning another's motive is what is dangerous. Whether it's Hitler or Obama or ISIS the followers blindly obey without questioning and that is the problem.
People who stop and question and think will see clearly both the Bible and Quran do not promote evil.