I've only recently begun to consider them. They've always seems like a lot more trouble than they were worth. For handguns, I shot 44 and 45 calibers, so I felt I was already making big-enough holes.
Since giving up on 22 rimfire, and jacketed bullets for center-fire, I'm finding a potential use for at least one HP mould for mouse-fart loads using REALLY soft bullets, which kill varmints/vermin decisively and don't exit the body. For my own 30-cal endeavors (30/30 single-shot), I can see a CUP POINT being useful. I have been tossing the idea about to have a 2C, HP mould made with one 180-grain (or so) and one 100-grain (or so) in 30 caliber, with a cup-point pin for the heavier and an HP pin for the lighter.
Using an old Ideal 358429 HP (maybe using the wrong number) with 75/25 pure lead/wheel-weights at about 450 to 500 fps from a carbine barrel, I have a load which dispatches varmints at close ranges MUCH more effectively than a 22 rimfire, and without the drama of a typical 22 centerfire, varmint-type cartridge. "PFFT-SMACK-SLUMP."
Just entertaining the idea for now, but the cup-point in the heavier 30-cal is tempting me the most. With some of the systems offered today, it's a more appealing aspect than using my old mould with the loose pin.