In my experience this is easier to do in real life than on a forum where many participants are merely trying to defend views they already are commtted to.
The problem seems to be with those discussions designed to draw people in. To keep people debating. I think many seekers, atheists and christians do make a real effort sometimes to find a common ground, and respect each other. And some people need to keep discussing things.
But to christians I would ask when it comes to believing in God, what finally moves someone to Faith? - is it not God's Grace much moreso than any rational argument?. I mean one can produce rational arguments up to a point.
Also some christians are fideists (they believe without knowing for sure) the same is true of atheists - they can be so confident without knowing for sure. Some don't merely say I haven't had that experience you speak about. They in effect are saying because I haven't had it, you must be mentally ill.
Well some people are mentally ill (and who
is perfectly sane) or psychologically disturbed and they are relying on Christ, or a Higher Power for recovery, sanity. Is it right to attack that as a being a merely a defence mechanism. Others without faith cope by the bottle, or the TV, or golf... why attack someone who needs faith, why don't atheists go round arguing with everyone?. What way do
they cope it could be asked.
I can't see anything come of many of these debates. Maybe one or two, between thoughtful, well read folks who try to understand each other - those I would listen too.
I am not sure that one can provide a irrefutible rational proof of God. One can provide good reasons. But do have proof of something one has to
do something even in science. Rational argument proceeds towards certainty then if continued in People will use reason according to what they believe. When a person becomes a christian
reason takes a different place and direction, but christians differ in their attitude to reason.
Rational argument proceeds toward increases in a sense of certainty but after a point if continued in it diminishes it again - I wish I could explain that better but its my experience. It doesn't lead to ever increasing sense of certitude.