In childhood I had my own electric pencil sharpener. I was in love with it. So much better than the hand-crank ones the schools had in those days, and I distinctly remember how some of those manual sharpeners had been used so much that they were falling apart, and you had to press together all the parts just so for it even to get a half-decent point out of your pencil lead.
I also really enjoyed pulling out the little plastic drawer on my electric model, full of wood and graphite shavings, and dumping it in the trash. Even the smell of it was enjoyable to me.
Nowadays I use mechanical pencils for writing, but I draw with wooden pencils. For that purpose I have a neat little German sharpener with two blades, one that trims the wood and one that trims the graphic. You do them consecutively so you end up with the maximum amount of sharp lead. It doesn't always work well, but most of that comes down to human error. When you shave the wood away from the lead, it gets fragile, so sometimes I accidentally break it during the second phase. Still a good device, though.
In art classes, they always advised us to sharpen our pencils by hand, using a hobby knife to whittle away the wood and expose as much of the lead as possible. I was usually not patient enough to do this.