Now this may be utterly weird layman-physics-question, but anyways...
I have read recently following:
"The fundamental universe laws are everywhere the same. It's just that the manifestation (!) of (these) laws is different (!) on a specific "scale"."
Which brings me to the question:
Could it be that GR and QM are one and the same thing on a "different scale"?
If yes (LOL), that would "explain" why it is not possible to "merge" GR and QM.
Was question like this ever considered?