I'm a current Christian. I'm a forever Christian. I'm just making a point about scriptures. I think a lot more Muslims than realized do follow the good in the Koran. I haven't met a Muslim yet who actually supported terrorism.
And I think you need to check your history some. Yes, Christianity has spread through service and other missionary work. However, war has also been a tool for spreading it. I'm sure you've heard of the Crussades and the fall of the Aztec culture. (Yes, I realize the Crussades were a response to the Muslims taking over particular countries, but it happened 700 years before, so give me a break. Not to mention Jews died in this too. What did they do to deserve it?). And a side fun fact is that there was a time when an entire country in Europe (mostly Britain I think) had to change their denomination because the new King or Queen believed a certain way.
Everyone knows about the periods when the church was run by politicians.

In fact, that is ALL most people know. However, as "The Church" is defined as: "all those who have accepted Christ as Savior," it is simply impossible to
grow The Church through war or conquest. There is no way to
force someone to become a Christian...it MUST be done willingly. Therefore, 100% of the "History of Christianity" taught in today's educational system is a lie. What they teach is the result of letting politicians take over your religion...exactly the way today's government is trying to take it over. Our founding fathers worked very hard to limit government's role in the church for just that reason...and our leftists morons are knocking themselves out breaking down that wall to create more and more government rule of the church.

On the other hand, Muslims have no requirement to accept the Holy Spirit in order to become Muslim. They can truly spread their religion through war, terror, and murder.