Since childhood I was taught about religion, life I regularly, I think everyone should believe in religion and the appropriate running of the Scriptures the world will peace.
Every adult believes in what he wants. In general, one must believe in good and every day do something useful for others. A person can not believe in anything, but if he does good deeds and cares about others, this will be the first step towards peace.
It seems to me that religion and truth are incompatible. Why do you need religion to help other people? It must be your own beliefs. Religion has arrogated to itself the right to universal principles. What does God do? All believers are really sinners, but otherwise hide it. They are cheating themselves and their God.
If God created religion, he would create one for all - the religion of truth. And all existing religions only partially reflect the truth that the creator wanted to convey to us. All people are guilty and deceive themselves first.
You first have to understand that we all have free will.
Second, we are all fallen people, separated from God and his will and love.
As result, we have different understanding about God, purpose of life etc., and we are using our free will often in wrong way.
God can try to guide us through prophets, revelations, holy mans, holy books etc. but it's our responsibility only if we will accept it or not.
Only God have absolute truth and love. We are all imperfect and can just try our best. It's the same for priests in the churches.
So, we can't say that any religion is perfect because we are not perfect.