It is cute that you claim to "know what [I am] gonna say. Ex-JW's are a crowd just like a herd of cats- all wanting to do our own thing and think our own way, so you really can't know what we are going to say.
Initially, I want to say that the world will definitely be a better place without religion. But I have to clarify that it would only be so under certain conditions.
You say there would be "No conflicts between Islam and Christianity, No conflicts between different sects, No families being broken up because of Religious belief."
I remember seeing an episode of South Park that helps with this.
The character, Cartman is hundreds of years in the future due to cryogenic suspension. Worldwide atheism has eradicated religion. Atheism has in turn split into three hostile denominations at perpetual war over the so-called "great question": Cartman discovers the nature of the "great question": the war is being fought over which denomination name is the most logical for atheists to call themselves.
There is war over what name should be used for Worldwide Atheism, so essentially 3 religions or "sects" have been created, split over a stupid issue. And that could happen if religion did not exist- groups could be so divided over issues like liberalism vs. conservatism, homeschooling vs. traditional schooling, so many issues- many of which are just like religious arguments today. Families could be broken up over issues like who they voted for.
I would love to see religion gone- a major cause of division. But it would not solve all the problems that exist primarily because of religious divide.