Difficult question..

Real mass adaption for me is when grandmas will use #Bitcoin like it's completely normal, so after have used it even before being a grandma. We need at least a good layer 3 after #lightning network (L2) and probably at that time #Bitcoin would have sucked already 10/20% of world investment asset allocation.. now it's only 0.5% I think.

I would say 20 years if all goes well, at least, for Real #bitcoin mass adoption.🍀