I really appreciate you are polite behavior. your questions are valid. AllAh said, think and learn by your own what is what and why it exists. He; didn't made anything useless. I call him(God) "AllAh" because i took this word from that religious book which words are same(not even one letter changed) for 1400 years, SO i believe his name is that. Before the Islam all books were changeable so religious people changed them as well by their own like there are many versions of bible changed by religious ppl, not by Jesus or any other prophet. but at last prophet AllAh said I'm sending the book which I'l care about my own, so no one could change it. It's not lie or miracle, it is reality. 1st answer is, A child, when he born, he also has a brain too, but we teach him everything in easy ways. we teach him what we learnt and what our elders taught us. Without teaching a child is like a child with knife and mangoes, he could kill himself too with knife and also could cut the mango and could eat it. If we don't teach to a baby so he could kill himself. So religion is like elder someone who is honest, and our guard or owner or create, whatever you may think. I'm giving examples of It: Like we human learnt to brush our teeth in 16th century maybe or later, spent 1000 years to learn it. He told us about fingerprints 1400 years ago, that we can differentiate and recognize each person by fingerprints. he made different fingerprints for each person. But we spent centuries for learning it by our own. Right? Our AllAh almighty told it us 1 thousand years ago, and maybe before too but maybe we forgot, but he told us again. There are many examples, I can tell you all of them, that science told us later but our AllAh told us before we human being learnt it by our own. At last just one more sentence, what we learn we write it in books, for tech next generations easily. we don't leave it on our next generation so they'll learn it too like we did. we want to save their time and whatever we do it for. Without books universities are useless. Hope you getting my point. 2nd Answer: AllAh is God of everything, he created and owns everything including of animals and whatever exists. He's One and Alone so maybe that's why he made pairs. 3rd Answer is: This world is not a place for live for ever. We are not created for live only for 1 century. we craeted for live forever like angles(the creation with light) This world is an examination hall. We should discus history of humanity so learn it as well. it'll feel like a story in starting but i request you to read it once carefully. Angles and Jins(we call them unseen creatures like the creation we see in horror movies, the are also bad and good like human) were he already created with light and fire. Then he made humans with mud(I don't know the exact word, but mud mean everything that has weight, we can call it mixture of mud and iron and everything what has weight. So after he created human(Adam), and asked fire and light for surrender and accept it as my loveliest and superior creation, some Fire(Evil/Iblees) said I'm superior and better than that mud. some fire said, I'll not obey your that order. the creation with mud is bad thing, that'll make violence on your planet. So some fire swear that I'll ever try to misguide your that creation to violence, I'll prove my words that human are not able to be superior. So after that, AllAh made jannah/Paradise for living of human. he made pair of it too. but he when he see their some bad mud too that is not obeying him and will make violence, and not able to live in Paradise. AO he through us in this planner we call world

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3rd Answer is: This world is not a place for live for ever. We are not created for live only for 1 century. we craeted for live forever like angles(the creation with light) This world is an examination hall. We should discus history of humanity so learn it as well. it'll feel like a story in starting but i request you to read it once carefully. Angles and Jins(we call them unseen creatures like the creation we see in horror movies, the are also bad and good like human) were he already created with light and fire. Then he made humans with mud(I don't know the exact word, but mud mean everything that has weight, we can call it mixture of mud and iron and everything what has weight. So after he created human(Adam), and asked fire and light for surrender and accept it as my loveliest and superior creation, some Fire(Evil/Iblees) said I'm superior and better than that mud. some fire said, I'll not obey your that order. the creation with mud is bad thing, that'll make violence on your planet. So some fire swear that I'll ever try to misguide your that creation to violence, I'll prove my words that human are not able to be superior. So after that, AllAh made jannah/Paradise for living of human. he made pair of it too. but when he saw, there some bad mud too that is not obeying him as well and will make violence, and not able to live in Paradise. He through us in this planner we call earth for testing us. For testing who's good and able to live in paradise and who make violence.