You're a funny guy. The Mohammedans spent the Middle Ages invading Europe, bless their hearts.
After Mohammed's death Mohammedanism aspired to become a world power and a universal religion. The weakness of the Byzantine Empire, the unfortunate rivalry between the Greek and Latin Churches, the schisms of Nestorius and Eutyches, the failing power of the Sassanian dynasty of Persia, the lax moral code of the new religion, the power of the sword and of fanaticism, the hope of plunder and the love of conquest — all these factors combined with the genius of the caliphs, the successors of Mohammed, to effect the conquest, in considerably less than a century, of Palestine, Syria, Mesopotamia, Egypt, North Africa, and the South of Spain. The Moslems even crossed the Pyrenees, threatening to stable their horses in St. Peter's at Rome, but were at last defeated by Charles Martel at Tours, in 732, just one hundred years from the death of Mohammed. This defeat arrested their western conquests and saved Europe. In the eighth and ninth centuries they conquered Persia, Afghanistan, and a large part of India, and in the twelfth century they had already become the absolute masters of all Western Asia, Spain and North Africa, Sicily, etc. They were finally conquered by the Mongols and Turks, in the thirteenth century, but the new conquerors adopted Mohammed's religion and, in the fifteenth century, overthrew the tottering Byzantine Empire (1453). From that stronghold (Constantinople) they even threatened the German Empire, but were successfully defeated at the gates of Vienna, and driven back across the Danube, in 1683.
Wake up and smell the coffee.
Islam was a very aggressive and expansionistic religion, particularly in the century and a half immediately following the death of Mohammed. On the other hand, it is equally true that moslem leaders such as Saladin were far more tolerant of people of other faiths than were Christians. Jews and Christians were generally treated very well and tolerated within those moslem empires. Do you dispute that?
Christians, on the other hand, were busy engaging in pograms against each other, and were horribly intolerant of other religions. Try reading up on the sack of Jerusalem by the Crusaders, or the Albigensian crusade, or the Inquisition. Heck, Christians were burning each other at the stake. The history of Christendom is a pretty bloody one. But does that mean that Christianity as a religion was fundamentally violent and evil, or just that there were some violent and evil people who claimed to be acting in the name of Christianity?
The fact is that there are more than a billion moslems in the world. The overwhelming majority are peaceful people who live their own lives, worship their god, and are no more violent than the average Christian. That's self-evidently true. Because if they weren't, the amount of bloodshead and terror there would have been not only now but through the last few centuries would be mindboggling. I lived overseas for a bit in a culture in which islam dominated, and was never treated other than in a friendly and courteous manner. So there's no way in hell you're going to ever convince me that all moslems are evil.
I'd agree that there is a malignant subculture within islam that needs to be eradicated. But the blanket condemnation you issue can only be due to either ignorance or irrational bigotry. You pick which.