Religions and anti-religions doesn't make or destroy God.
This is what everybody needs to understand. God has nothing to do with religions: Christianity, Catholicism, Islam, your own, or your next-door priest's. I always bring this up whenever I am in discussions with friends who are conflicted with their faith. It seems that their flawed logic starts from religions.
"Religions are bad because they divide and create war. Since Religions worship God, and that God should be all-loving, therefore, God does not exist because war is not loving"
I iterate so many times that religions are run by people, just like corporations and governments. Anything run by people are prone to corruption. The fact that religion X wages war all the time, or corrupt from the inside, tells nothing about God, or God's existence. You are talking about people who are taking advantage of the powerful things that are religions for their own benefits.
People will use anything to create separation, gain power, and hurt other people in the process. If there were no religions, they will use other excuses: skin-color, nationality, ideology, politics, their lands, their lambs, sexes, what color should they use for walls, C# vs C++, and all ridiculous things will create tensions and conflicts. It doesn't matter. That is the very nature of human beings: to be different, to question existing systems, and to rebel.
These natures, which may sound very damaging and why would God (if God exists and is responsible for why we were created this way) do this to us, may actually have some benefits. To allow us to rebel would prevent us from being under control of some oppresive forces (whether that's a corrupt government or demons). To allow us to be different creates diversities, and diversities is a good thing.
It is theoretically possible for human beings to coexists together under different beliefs and ideologies, unfortunately greed, jealousy, and lies come into play and wreak havoc in everything. This is what Christianity/Catholocism (even though it's not perfect itself) trying to teach to its members: to love one another, so that none of these would have happened.