Because it is the Muslim Brotherhood which has been behind the entire Arab Spring.
See? This is not true, or inaccurate at best. The masses who demanded the removal of Morsi yelled about how the Muslim Brotherhood stole their revolution, which they did, just like the Communists in Russia and the Ayatollahs in Iran. The masses did not want a Muslim state, they wanted more justice and equality, which is a right for all.
As for Syria, it's a whole different story. Hafez al-Assad's (Bashar's father) takeover of Syria and transformation of it into an Alawite state was, according to how one writer described it, as unlikely as "a Jew becoming the Russian tzar". The Alawites were a religious minority despised and persecuted by must Suns and not even considered Muslim by some. Egypt was just an ultra-corrupt authoritarian state. Syria is an authoritarian state ruled by a religious minority which most most Suns, especially fundamentalists, consider infidels. The Suns who compose the majority of Syria's population were just waiting for an opportunity to rise against the al-Assads, and the "Arab Spring" brought the opportunity.
Have no doubt that Assad would use any means necessary to stay in power. It's not only his own fate, it's the fate of all Syria's Alawites that depends on it. If at the beginning the rebels were just a minority in a small number of cities, the more the war drags on, the more the government's fate is sealed. The rebels would never forgive the ruler who massacres them, and the refugees would support them.
Syria would definitely be driven to chaos if Assad falls; The Alawites could be massacred. This is where foreign humanitarian intervention would be necessary. Iran could step in to defend the regime, but the Ayatollah regime's days are limited too.
You people go out and say that USA's intervention brought Iraq to chaos; No, it was the fall of Saddam that brought Iraq to chaos. Saddam needed to go down eventually, and it was only a matter of time. The chaos is all the fault of authoritarian rulers and religious organizations who shove religious propaganda and hatred in their people's throats. Eventually people would understand warfare and hatred are stupid, but it would take time.
It's all history the way I see it. The middle East could become democratic; At least more democratic than it is today. But before it does it would probably undergo massive bloodshed like Europe had.