If 98% of the worlds population were Jehovah’s witnesses there would be no wars.

The 2% that are still Muslim can peacefully live among us and be treated as neighbours.
I find it hard to believe when you said, “The 2% that are still Muslims can peacefully live among us and be treated as neigbours.” You must remember that Islam started with 0.1%percent. That’s quite a small number. Yet, look at what they did (rapidly) in a matter of 50 years. Well, their little 0.1 % grew so fast. Instead of 0.1% they rose within 50 years to 5 percent and increasing. Islam does very well seeking the conversions of non-Muslims with the sword under peoples throats. This is seen in history and I’m not making this up.
The Catholic Church definitely had a perfect right to start the inquisition in most European countries. And this is why?
Consider first the great danger Turks and Muslims opposed for Europe and Christianity in the 16 Century. It was the greatest threat to Christianity! Yet, who were the ones blindly conspirating with the Turks and Muslim when they were snatching bit by bit Christian-Catholic countries from the south. It was the Protestants who were co-operating with the Turks and Muslim in hope that they would destroy the Catholic Church. But when the Turks started to come closer and closer at their door stop of Germany and Austria, things started to change. In fact, Martin Luther began to even feel a little worried, so he wrote a pamphlet called, “On the war against the Turks,” calling all Germans to resist the Ottoman invasion of Europe, since Vienna was about to come crashing down because of the Turks.
Why and what was wrong with Vienna falling into the Ottoman hands? Isn’t this a good thing, besides considering that Protestants were omitting and failing to give a hand to Catholics on every side of Europe, since they found their religions relatively almost the same. They agreed on Iconoclasm, they agreed on rejection of marriage as a sacrament, they agree on rejection of monastic orders, they agree on fundamentalism.
But wait there’s more! Queen Elisabeth I, was collaborating with Muslim-Morrocans in the northen Africa, in order to capture Spain. These Muslim Morrocans were seeking in exchange weapons, tin, amunition, in order to fight against Spain, France, Portugal, and rest of Europe. But in return England was seeking in ex-change sugar, land, and etcetera. Her disobedience threatened Christianity!!! It seemed that Christianity was about to be wiped off from the face of the earth, because “a nation that divides itself will not last. And Christ that is divided will not last!”
This division gave the Turks or the Muslims an advantage to Islamisize Europe even till this day. It also gave them a head start since those who were called to protect Christianity, found a great advantage to weaken the church. Yet, when they sought the weakening of the Catholic Church, they began to feel weakened and threatened themselves
One has to ask themselves, "Why was Queen Elizabeth I, collaborating with Muslims?
Well, first of all she hated the Catholic Church too, just like her daddy (Henry VIII).
Secondly, she knew that the Cathlic Church was trying hard to fight off Muslims on eary corner of Europe. But she know also that Protestantism was keeping the church too busy, so she saw an advantage to strike and conspire against Christianity, the Catholic countries of europe, because she wanted more and more land and power over religion.
So, in order to re-strengthen Europe - Christianity, and in order to re-inforce europe, and in order to fight off Islamisation of Europe, the Church needed to establish the inquisition to re-inforce, to protect Christianity, in order to elimate even those Christians who were endangering Christianity with their sects and heresies.
Had Martin Luther, and Queen Elisabeth I, and many other former catholics not sought the destruction of the Catholic Church and persicuted it, they would have made the Catholic Church even stronger for her mission towards preaching and evangelizing non catholic countries.
If you want to learn more about how Protestantism gave a great advantage to Islam, even till this day, then click:
en.wikipedia.org/wiki/Protestantism_and_Islam
The reformation itself had threatened Christianity were it not for the Catholic Church and for the inquisition.
God bless