I am profligate with digital, primarily because I can.
Whilst often decried as the actual reason for digital photography's supposed inferiority, I have found that digital photography and film photography are different on several levels, and support different shooting methodologies.
With film, shot discipline matters for several reasons. Cost is one, as is speed of shooting and reloading. Even then, there are situations when rapid-fire shooting with long rolls and motor drives were advantageous for certain types of photography.
With digital, there is no particular advantage to shot discipline. If the camera supports rapid shooting and the memory and battery power is there, there is often no real reason not to take multiple shots.
Yes, I shoot 'more' with digital. I do not see this as a drawback, but an advantage. As mentioned, my percentages don't seem to change much, but more shots mean more keepers for me.