I can see both sides. Yeah your brain might do strange things in its final moments, but I just ask myself this.
Most people believe the 'the big bang' theory of our creation, unless your a 'creationist'? Ok, what came before the 'big bang'? Most people will instantly answer 'nothing', but nothing is a Human concept which means absence of anything. How can you get something from nothing? So how did the 'big bang' happen.......? My answer is this:- What came before the 'big bang' was beyond my comprehension!
Why did i tell you that above. When i'm asked If i believe in life after death then I beleive there is a lot in this universe I don't understand because its beyond human comprehension if there is life after death then its probably beyond my comprehension.
If there isn't life after death? I just won't exist any more and not be able to tell you I told you so when i see you after death!
We can only see up to 1 second after the big bang, as that is all the light we can view atm. In time we may be able to see further into the past, but at present that's about all we can see. With continued scientific development, we may be able to hypothesise what came before the big bang, but the common theory is that some super massive blackholes collided and dust and particles formed. The infinite monkey cage can explain it much better than I can, i'm no astrophysicist.
Religion is a man made thing, it's used to oppress the masses, it was also used to try and explain the unknown. All religions share the same underlying features. Much of Christianity comes from Paganism, the sun god became god, the effigy is the same, as are the tales. There used to be a meme about this, for instance I think it was Horus (Egyptian god) who had a son that died, and then rose after 4 days (Although I may be getting this mixed up with another god/demi-god)
Christianity was invented by a roman emperor, I forget which one, but you can read up on it. Before that there was paganism, the Egyptian religion, and various others as well (Mayan, Aztec etc).
I have no problem with those who are religious, or their beliefs. It is called "faith" for a reason, as that is what you have, religious people will always roll out the "Well you cannot prove that God doesn't exist", well no, but you cannot prove he does exist either...
We can however prove that the universe wasn't made within 6 days! And we can also prove that we aren't all descendants of Adam and Eve, ffs Adam and Eve had 2 sons, Kane and Able, did they commit incest to further the human race? How else were the rest of us descended?
As for the seeing of "god" when you die, it's very much the brain trying to interpret what it has seen/experienced, and it does that by relating to stuff it knows. This is how optical illusions and stuff work as well, the brain basically plays tricks on you. It's like your eyes can constantly see your nose, but it doesn't block your vision, because the brain blurs it out.