It's all about obsession. SPICE flirts with the audience, staying constantly desired. Eventually part of it can fuse into BEDROCK and become mundane. This fusing principle anchors the SPICE into reality. For illusion of realism to work, SPICE has to pretend to be partly dull and boring. In this way, mundanity can be extremely attractive as it validates the spice as plausible. It's so real, so close, we can easily imagine it being part of our lives. As a given example of that last idea, magic in Harry Potter does exactly that, it underplays magic by making the characters of its world find it boring: classes, heavy books, utilitarian magic, newspapers...
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fascinatingly boring
It is extremely easy to overdose with SPICE. Do not take that prospect lightly for it is guaranteed to doom your story. SPICE Overdose brings a plastic like shallowness, just like adding too much cinnamon, makes everything taste dull.
The fact that fusing it into BEDROCK gives you the opportunity to be interested in something uninteresting is deeply appealing to an audience.