Heh, I would think by now that you would me know me to be a good deal more clever
But, logic good sir, logic.
The problem with saying that the world would be better without group X is that it relies on a kind of logical fallacy called affirming the consequent. That is, because some people use religion for evil purposes, then removing the religion will eradicate the evil. Or, to put another way, if A then B, therefore B.
There are two reasons for why such logic is false. The first is that it treats the premise as a foregone conclusion. That is, it is religion that is responsible alone for some of the greatest tragedies and that simply getting rid of religion would mean that those greatest tragedies would have never happened. But to take that as true, you need to be proving an affirmative with a negative, which is impossible. In reality, we have no idea whether or not those tragedies would have happened, and we also have no idea if other tragedies would have happened instead. All we can do is look at the current state of the world. As many of the greatest mass murderers in the 20th century were atheist (Mao, Stalin, Pol Pot, Menghistu, Brezhnev, and Kim il Sung, to name several), I think it stands to reason that simply removing religion would not prevent tragedy.
Secondly, the logic is false because even if you assume the premise is true (again, by proving an affirmative with a negative), then you necessarily need to ignore the intermediary step. For example, to go from a world where 90% of society follows some religion to a world where there is no religion would require the absolute control by the state of society. The state would need to interfere with the people's right to freedom of thought and to freedom of speech, and it would need to accomplish great acts of brutality to accomplish its goal.
In fact, that's what happened in the USSR and China with regards to religion. In this thread, a number of people have stated that the world would be better off without religion, which was the same stance held by the two most brutal regimes of the 20th century.
Under the doctrine of socialism, the means of production must be controlled by a centralized state. That requires absolute obedience to the state. To achieve absolute obedience, all other doctrines and ideologies must be removed, which is why nearly every communist regime sought to remove religion. In order to do that, though, you need to kill an awful lot of people. Thus, to go from a world with religion to a world without religion, you need to go through the intermediary step of the greatest genocide that history has ever known. In short, to achieve the supposed ideal of no religion, you necessarily need to engage in a great amount of evil.
Anti-religious bigotry ignores an awful lot. Has religion caused bad things to happen? Of course, but how is that an argument that the world would be better off without religion? Any particular ideology or doctrine, including atheism, can cause bad things to happen.
On balance, I believe that religion has done far more good than harm. As a number of people in this thread have stated (often as arguments against religion), people of the same belief system tend to stick together. From an evolutionary standpoint, that is a very desirable aspect as it catalyzes cooperation. Moreover, the religions that have survived to the modern day tend to teach about the sanctity of the individual, and respect and love toward one another.
But that is really of no consequence. I merely wish that people who have chosen to not follow a faith would respect those who have chosen to follow a faith. And no, arguing that the world would be better off without me or people like me who have chosen to follow a faith is not respect. It is bigotry countenanced in the name of the greater good, and it is no different than when people use religion as a tool of hatred.
As I said before, and I say again: Those who seek to argue that society would be better off without religion are no different than those who argue that society would be better off without X group.


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