I often get asked why I would oppose religion and God. Christians usually couch the question in such a way as to imply it is purely for rebellion against the creator and thereby justify their assumption that I will spend eternity in Hell. Lol. The truth is more profound than that simple shell game and can be found in the problem of evil.
If you ask a theist, "why are some people rich and others desperately poor" or "why do some people go to good schools and others get neglected" then you will get the usual response, "God has morally sufficient reasons for creating these inequalities". In other words, the theists religion causes the theist to simply accept inequality in the world as the work of God. Alternatively, they will state that such inequality is the result of man's sin. Again, there is a carte blanche acceptance of inequalities in our society on the basis of reasoning underpinned by their beliefs. Of course, those inequalities in this world do not matter because of the promise of the afterlife.
If we follow this premise we see that the theist is unquestioning of power in the past, at present and into the future. The theist loses the capcity to question authority because it is "God's will". But we know that in order for society to change for the better there must be an element of questioning of authority and the present circumstances. Religion just removes the theists voice from the discussion. Thus, I oppose religion because it pacifies people from determining their own destiny.
Think though of the irony of the situation. The deal made by theists is to accept their fate and in exchange they are offered an eternity in the afterlife, a place where no-one has been and no-one can find without having never to return. It is the sale of real estate that doesn't exist in exchange for everything you have in the world. I feel sorry for theists, they have been duped and have become the unknowing projectors of their mind destroying poison onto other people. They do not realise their choice and accordingly, they are lost.