You have demonstrated several times that there is no proof you will listen to, so what's the point?
The point for some atheists is to cause doubt and disbelief. It is sad, because these same atheists (once again, not all) claim to want rational discussion, but cannot adhere to that.
The only thing you can do is believe what you believe and discuss those beliefs with others. Most of the atheists on this board are willing to have rational discussions about their non belief, but a few ruin it for everyone. Do not judge all because of a few.
The best thing to do is ignore those that do not want rational discussions and talk to the ones that do.
Also, don't preach, which you haven't, but preaching never works. Don't discuss with the hopes of turning someone to religion, that also won't work. Rational discussion is the way to go, it's hard, but when we are respectful of each other it is possible. :)