why do atheists talk about how god doesn't exist?

"why do atheists talk about how god doesn't exist?" ..because that is what they believe. Don't you talk about what you believe?

no, Atheists try to disprove the existence of God, because other people believe in God's existence.

By my experience as a believer, some have a lot of hate in their hearts, some are angry at God, some are curious, some are insecure/embarrassed, and some do not know how to react, some can be nice and want to build their faith. There are variety of reasons.

I do not try to disprove god. Few atheists do. Further, I do not believe in round squares, and need not to show there are none.

First off, your writing is incredibly incoherent and your point extremely unclear. Im not sure what you are trying to get at here, but you certainly do not need to believe in something first before you go against that particular belief... that's like saying you have to be racist before you can accept all ethnicity's.

Misspellings and illiteracy aside, this argument works equally well for Santa Claus and the Tooth Fairy.

P.S. You don't have to believe in something to prove that it doesn't exist, in spite of erroneous claims like yours. What you actually have to do is disbelieve in something. Can you see the difference?

'becasue to disprove something you have to believe in it first'

wtf?

Following religion blindly, and putting a mythical figure ahead of common sense and morality, is responsible for most of the ills of our present civilizations.

And, no you don't have to believe in it to disprove it. That's just nonsense.

You do not have to believe in something to disprove it.

It doesn't exist. You have presented a straw man argument. (That's a nice way of saying that we know you lied.)