While we are all entitled to our opinions it can get in the way of facts that's why the Finnish way of communication you just described might be a good one. We should learn to separate our opinions from facts and face the truths. Though when it comes to the issue of an all-powerful being I believe He does exist. Anyone who's witnessed supernatural phenomena done by him would believe, just like we believe the wind exist because we witness its effects.
It is a good way to communicate in some respects - in others, it fails. However, I think it is good to be able to learn where and when certain methods should and could be applied.
What constitutes a supernatural event?