For someone that's only prototyping and only making small amounts of circuits, does it make sense to build up a stock of "normal" diodes at all? Or should he go with Schottky diodes, like the 1N5819?
What are the "exclusive" use cases for normal diodes?
From what I've seen so far they have be (ab)used to bring 5V signal levels down to 3,3V (utilizing the forward voltage drop). What else is there?