For people come from Christian or other monotheistic traditions, this may be an insult, but this is just a view from Buddhism.
English is not my language, but I will try my best to express my view...
I hope that you would say that is your own view (Not the view from Buddhism
). I have practiced Buddhism but I have no problem with any other religions. I instead have very high respect to some of their doctrines's point of views even though I do not follow them.
Diversity is what nature is. There is no fixed solution for all. There are many different diseases which require different treatments.
People are not always looking into one direction. Their goals are varied, so their paths are different. If they can reach their goals then they are in the right path. Otherwise, they are in the wrong one no matter how good the path is.
Dualism is what the world is about. People have external and internal characters. They are not always the same. Sacred doctrines also have external and internal senses. Many times, we only see the external but not the internal which is the real substance of the person or a doctrine.
Sacred doctrines have internal senses that are not easy for normal people to understand because it is not yet benefit for them. Just like we do not expose sexual materials to a two year old child because it is not appropriate for that child. When he/she grows up, he/she will find out for himself/herself.
By not understanding the internal senses of a sacred doctrine, people give different interpretations trying to expose the hidden internal senses of the scripture to the world. Therefore, they created many different sects and misunderstanding. However, if we really understand the internal sense of a sacred scripture, we will prefer to keep it as it is. All we can do is to give some hints to whoever could understand and benefit from them.
The internal sense sometimes is completely opposite to the external one. The external is about material/exposed aspect while the internal is about the spiritual/hidden one.
Majority of people are chasing the external world, they do not see the internal one.
By not understanding the internal senses of a sacred doctrine, people trashed the doctrine without realizing that they are creating horrible troubles for themselves (e.g. wrong speech, blasphemy...)
Just like what Lao-tzu in Tao te Ching's Chapter 41 (Translated by J. Legge) has said:
"Scholars of the highest class, when they hear about the Tao,earnestly carry it into practice.
Scholars of the middle class, when they have heard about it, seem now to keep it and now to lose it.
Scholars of the lowest class, when they have heard about it, laugh greatly at it. If it were not (thus) laughed at, it would not be fit to be the Tao."
Not all sacred doctrine is the same. Each doctrine will lead to a different (or sometimes the same) destination. Some doctrines will lead people to heavenly pleasures, other may lead to freedom...
Looking at history of a religion does not always show what its doctrine is about. It only shows how people understand and apply their understandings to the world or to their practices.
People are drawn to a particular religion/sect because of their own kamma. Once the kamma exhausted, they may switch to a different one until they could find their own escapes.
Even though I have practiced Buddhism, I do not consider myself a Buddhist or not a Buddhist or anything else, therefore, my view is also not a representation of Buddhism. I do not seek for any debate so if you do not agree with what I have said, just consider this is just my own view (just like you have your own.) I am not support or against your view; therefore, I do not say that your view is right or wrong. It's up to you to decide that.
Edit: Fixed some grammar errors!
Your post is good, I understand what you meant.
You understand that the world is complex, so do I.
The problem is, the world is complex, so why shouldn't we make it simpler? For example, if you say the world is complex, and let it be, so why can't I say, let make it simpler?
In the end, it is hard to know which one is right, everyone grasp to his opinion. And so there are fights, and there are wars. It is just people like you and me, but with good kamma, and they can start war for nonsense things. If you or I have good kamma, then we can start war for our own nonsense things. That is the world, that is nature.
What is nature? Nature is cause and effect. Hitler killed Jews, that is natural, the moon goes around the earth, that is natural. Everything is natural. Our thoughts, our needs, our desires are all natural things that obey the law of cause and effect. Dictators are natural, war is natural, peace is natural. Talking is natural, disagreement is natural, robbing is natural, killing is natural, forcing people is natural, converting people from other religions is natural. Everything is nature.
We can not evade nature, whatever you or I or anyone do, it is natural. Even you kill the whole world, that is natural. If you kill the whole Christian, that is natural, if you erase the Buddhism from the Earth, that is natural. The law of nature, is the law of cause and effect. Hitler could kill the Jews easily, can you do it? Probably not. We are all victims of the law of nature.
The problem is that, to win argument (war), the most important thing is, who is more enthusiastic or more talented, not who is right. Hitler is a madman, but the law of nature put him into the top of the world. Another problem is that, according to kamma, the one who is enthusiastic to Buddhism has better kamma.
People can doubt this, but I am not. People doubt it because normally, Buddhist countries are not good, but in my view, there isn't any good Buddhist country as an example. Even people in those countries, they don't understand the Buddhism. Very few people really understand Buddhism. So in the end, may wars solve our difference, and may the kamma points out who is the winner.
PS: you don't know dualism, dualism is a philosophical view. I know very well people's thoughts, needs, and desires.
PS2: Yes, you can say that is my own view, not Buddhism, I really don't care that much, because in my view, most of Buddhism is corrupted.