I think it incumbent to remind people of history in regards to Islam. As Rome was fully disintegrating, and orthodox forms of Christianity were wiping out mystical Christians and Jews, it was the rise of Islam that opened its arms to the light bearing refugees from the West. All who valued learning and free thought found safe haven in the Muslim regions, as the rest of Europe entered a Dark Age. In this Dark Age, many Kings could not even read, while Muslim peasants, and the refugees in their lands were literally inventing new sciences! It may be impossible to name the countless contributions early Islamic culture has given to science and innovation, and in peacefully accepting into their lands the greatest minds of the West, literally saved much that would have been lost had it not been for the protection of Islam.
(Here's some few examples and a beginning point for research:
http://en.wikipedia.org/wiki/Islamic_Golden_Agehttp://en.wikipedia.org/wiki/Islamic_contributions_to_Medieval_Europehttp://en.wikipedia.org/wiki/Islamic_science )
Even right through the Middle Ages, technology, science, and education flowed from East to West from the Muslim lands. This 'golden age' of culture, science, and spirituality in Islam brought it the power and the wealth to grow farther and faster than it ever has since. And to this day, the largest population and structure for the 'light working' mystics of any of the Abrahamic Religions still resides within the House of Islam, known as Sufism. After the Prophet Mohammad's death, mystical minded Muslims accepted, worked, and learned with Zoroastrians, Kabbalistic Jews, Gnostic and Mystic Christians, and pantheists. Mohammad himself met with these groups prior to his own Visions, and credits them with his true spiritual education prior to communing directly with Allah. This is why culture and spirituality was saved from annihilation in the West, and in fact grew to new, yet different, heights in its golden age. Islam became the 'sword of God' and Muslims His Warriors to what was increasingly the decadence, corruption, and evil that was slowly consuming Western Civilization. Islam was, and had been tasked, as the buffer and protection during this breakdown. Islam was given a Great Task, and has fulfilled, even exceeded it!
Today, Islam is in an awful state of spiritual decline, a low point in its cycle, just as Jews and Christians had been in other eras. There are reasons for this, and behind the scenes players that have exacerbated this for their own ends; specifics of which I shall not go into here.
I would also remind Sha'ul that Wahhabism is a recent growth in Islam (18th Century), and is only a small branch of the Sunnis, mainly residing in Saudi Arabia. Iran do not treat well with Wahhabists, as Iran is a Shiite country. Also, as a point of balance here, What Ra mentioned above is relevant. The last time Iran attacked or invaded anybody, they were called Persians and were fighting the Ancient Greeks, something close to 3,000 years ago! Yet, their scientists get assassinated (CIA and Mossad), viruses to collapse their weapons programs and infrastructure are deployed (Stuxnet, Flame etc. [U.S. and Israel created and deployed]), more peaceful and democratic governments completely overthrown (Britain and American), devastating economic, banking and business sanctions meant to hurt the entire Iranian population (sanctions such as these are historically considered siege warfare) (passed by the U.N. at the main demand of Britain, America and Israel), and I could really go on and on. To me, it is really a testament to the Persian people that they have not seriously retaliated considering the amount of provocation... But this is no surprise to me really, the Persians are some of the most self controlled, intelligent, and civilized people of Earth. So, why the provocation? I'll leave that up to you to answer for the time being...
As to incarnating in Muslim countries, I ask that you think on more than one level.... more can be learned and experienced in these places than what one might see at first glance.