Why are atheists against theocracy when I trust God more than an atheist dictatorship?

There has never actually been a "Atheistic" dictator for most have god complexes and the need that is shared by all oppressive political agendas, the need to control the thoughts and beliefs of others.

A person can battle atheism and other sins using the rosary and fasting.

You fail miserably at basic logic.

First, to describe oneself as a 'god' would require someone to claim having supernatural capabilities. No one does that (unless requiring a severe mental check-up).

Second; there is no freedom in a 'god society', since religious people tend to impose their religious views on others. The fact that there are over 30000 christian denominations at this point of time, all allegedly being splinter off the original chatholicism (or a splinter of a splinter) shows the lack of unifying thought even among religious people. Get back to us when you have cleared that out...

You can trust this god all you want, but it won't be running this theocratic dictatorship you are wishing for. It will be just another human conceived system of control that benefits a few at the top, in this case in the name of god.

Theocracies have historically been horrible for the people living in them, with no freedom for anyone other than the ruling class.  And no, atheism is not about "government becoming god."  That's ridiculous.  You're just repeating mindless nonsense someone told you.  Countries were most of the population is atheist and there's no religion in government are not hotbeds of government worship.

A theocracy means priests rule the country in the name of God or a god.

So lets say the theocracy has Odin as its God - would you still accept that.

You assume YOUR God would be the one that would rule the country, and that may not be true.

Atheist does not mean dictatorship - sorry you don't understand basics.

No atheist dictatorship has ever existed YOUR lack of education and false claims show why R&S is being closed because of the terrible intolerance, hatred, bigotry, homophobia and persecution posted by BAD Christians LIKE YOU towards others has driven so many away from God and into becoming antitheists‽

EDIT: I am against any theocracy if Mankind tries to create one because the only real theocracy is the one Christ brings with him.

I agree with you about that. But the way I see it, and with current trends that are really exposing atheists with Leftist ideologies, is that atheists are people without God. They don't tend to dwell in hope, love, compassion, or even know how to properly define faith. They tend to think of faith as a term used only in religious applications. 

So to answer your question, atheists are against things, they are actually not for building anything, they want to destroy. Godless people tend to remove solutions to their dialogue, they prefer to tear down, to destroy, to uproot, to convict, with nothing in their minds about what for, or what comes after. Human nature is on full display because there is no apparent God influence in their lives. They are only acting natural, without the supernatural thinking that comes with hope. Human nature without God is self-destructive. I tend to pull that out from the Bible when I read about godless people in there. Human nature is self-destructive. 

Something makes me think that you don't know what atheism is.