I suppose, to each their own...
Clicky is a switch. Like all other switches, it is designed to give indication of ON/OFF either by feel or by noise, or lights in some cases. I doubt that it was designed so that users will "like" the noise or the feel, but some of us do of course. The noise and the feel just happens to be a biproduct of the connection being made (or not being made), the mechanism which allows for contacts to remain in "contact" or not.
Typically, we think of light switches on a wall to be "on" when the switch is up. You would know the switch is on even if the light didn't come on. In this sense, SmartPD is not the most ideal "switch" per se.
BUT!!! I LOVE my D10 because it simply works for a flash light!