Remember the “Powers of 10” video from 1977? Perhaps this visualization needs to be updated, eh. A 21st century version?
Planck space (spacetime below the Planck scale) is preposterous. Trans-Planckian land! (Homage to Flatland.) Only the math offers any connection to that realm . I sometimes meditate on vacuum fluctuations and virtual particles (and black hole evaporation).
I find it interesting (although not necessarily compelling) to read about the religious views of notable figures like Planck.
Summarize Planck’s religious views here [TBS].
“A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.”
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 And I recall that Feynman said something about when the math “spits out” infinities, nature is telling us something important, that something more interesting is going on.