It wasn't that no one had tried to use Sage Crystals directly for a breakthrough; quite a few had attempted it!
However, the energy level contained in Sage Crystals was too high. In terms of physical attributes, superpower users were not much worse than Source Energy Users. Still, genetically, they were entirely different species on two levels!
Those superpower users who attempted to break through with Sage Crystals experienced genetic collapse and died on the spot. Even the luckiest among them almost lost all of their original power, becoming a life-long bedridden invalid.
Therefore, the significance of the Sage Crystal stimulating devices was monumental. However, this did not erase humanity's yearning for this power.
