The world is encapsulated with so many religion embedded with different doctrines, teaching and belief which have affected our sense of reasoning in different ways. Religion has raised serious concern to mankind especially in terms of sociopolitical and economic coexistence. The major cause of insecurity in most part of the world today is the problem of economic and religion supremacy where everyone seen to uphold their religion with virtue and in a high esteem and even considered it to be the only true region and the only way to salvation and internity thereby condemning or seeing other religion as fake. So therefore, considering the problem associated with religion differences in world today, I think the world would have be a better place without religion.
My religion has given me a sense of identity; when the world leaves, only He stays. If religious conflicts have arisen in the past or present, it was anchored by man, not the religion. I don't think any religion promotes fighting and killing inhumanely, but those who practice these religions are the ones who cause chaos. Even if we all practiced one religion, some people within that religion would still be rebellious - that's how many religions came about, because one person rebelled.
What we should be concerned about is changing our mindset towards other human beings for the better; we should be concerned about being our brother's keeper as a person. Just choose to be a good human who does no harm to others. My point is, religion can help shape one's mindset for the better, give one peace, and a sense of identity.