They don't think like us.
The translations of the Holy Quran being sold to non Muslims have been altered to make Islam look like a religion of peace.
In our world what we call terrorism, in their world is just Muslims doing as the Holy Quran commands them.
This is a link to a free book on Gutenberg.org, three translations by 3 Imams of the Holy Quran side by side.
Remember in one memorable scene, one of Scott's lines says it all: As Patton surveys the positive results of the battle in progress between Allied forces and the Nazi army in northern Africa, he proclaims, “Rommel, you magnificent bastard, I read your book!”
Every non Muslim needs to read the book.
Until they do, and then behave accordingly, this madness will never end.
We have some choices:
The Muslims kill or convert all of us.
We kill all of them and destroy every Holy Quran in the world.
They live in their part of the earth and we live in ours, with them not allowed in our part.
I recall a statement once that Jews had a reformation, Christianity had a reformation, Muslims need theirs. I do not think a Muslim reformation will ever be in the cards.