Dear Atheists: what would convince you God/Christ is Real?

[Ahriman]

“But the strongest argument against Christianity is also Christians--when they are sombre and joyless, when they are self-righteous and smug in complacent consecration, when they are narrow and repressive, then Christianity dies a thousand deaths.”
― Sheldon Vanauken

But, that's most of them, most of the time.

I would thoroughly disagree with that. But Catholicism is like that.