It seems to have been used initially as a means of making equations and expressions dimensionless by making use of suitable combinations of the universal constants c, the speed of light, G, Newton's universal constant of gravitation, and finally Planck's constant.

Finally, because the expressions incorporate the Planck constant, which is normally associated with quantum phenomena, and both the speed of light and the universal constant of gravitation, which are often associated with relativistic and gravitational phenomena, these "particles" seem to have been elevated to a position of importance and even physical reality which is difficult to justify.

The fact that it and the other Planck quantities depend on the reduced Planck constant, which is regarded as being a quantity associated with quantum mechanics, and the speed of light and the universal constant of gravitation, which are associated with relativistic and gravitational phenomena, is something which comes out of human choice not something which occurs naturally.