I don't believe in Christianity primarily because of the brain

[Mister Agenda]

There are many reasons why I don't believe in Christianity.  The one that makes the most sense is that there is no soul.  Without a soul there is no heaven, hell or anything to do wit spirit.

There iw no use for a soul.  Modern science is showing that the brain is responsible for all the functions human bodies have.  I evolved into a complex individual, but when my brain ceases to work, I cease to exist.  Christianity is just myth and superstition.

Do you agree?

No, I don't agree. Your position is that there is no soul (not simply agnostic about it). How do you know this? Modern science has not explain the mind or consciousness let alone how it evolved. Since humans are designed to naturally believe in the supernatural, we therefore have an intuition about a soul. Seems to me that on one side of the scale you have no scientific knowledge in which to make a determination and on the other side of the scale, we have a fairly universal intuition that one exists. So, if you can't defend you premise there is no soul, then your conclusion therefore '...there is no heaven... and ...Christianity is just a myth' is unsupported and just an opinion.

Not believing in a soul is justified by the lack of evidence where one would expect there to be evidence if it existed. Damage to the brain can change your opinions...and your religious beliefs. Deep sedation can completely deprive you of awareness (though unfortunately, not always). The onus is on people who claim a soul exists to demonstrated its existence.

Modern science has told us more about the mind or consciousness and how it evolved than have ancient intuitions.  It's a bit of a double standard to require an explanation from science that explains every jot and tittle of what goes on in our brains while accepting 'God did it' as an 'explanation' for the same thing.

The evidence says that humans were designed by evolution (figuratively speaking) to err on the side of ascribing agency to events as a matter of safety (better to lean towards a sabertooth making that rustling sound instead of the wind, the consequences of being wrong about it being the wind are more dire). Our 'intuition about the soul' likely derives from the experience of dreaming; in which it subjectively seems like we go places and do things even though our bodies are still. That's not an intuition, it's a conclusion based on observation, culturally reinforced. The conclusion is incorrect because it derives from an incorrect understanding of what is actually happening when we dream: dreams happen in our brains, and we don't actually leave our bodies while we sleep.  

You're a fine one to talk about other people's positions being unsupported.