if he exits how can i deny it?
i dont have broblem even if god does not exits to do good in his name
So, you're willing to worship a monster?
I agree that with or without god, the only thing that truly matters is for humans to try and do good. And I'd define good as anything that doesn't actually hurt another sentient being.
However, by the same measure, the god most religious people believe in, is actually not very good at all. And I see no reason to worship a sadist.
All that said, there is actually no evidence of "god" besides a few religious books and their lofty claims; texts which are themselves imperfect, man-made, and full of inconsistencies and cruelties.
To quote Epicurus:
Is God willing to prevent evil, but not able? Then he is not omnipotent.
Is he able, but not willing? Then he is malevolent.
Is he both able and willing? Then whence cometh evil?
Is he neither able nor willing? Then why call him God?