Even loading handgun I really like the nicer dies. If I had to adjust my seating and crimp dies by feel alone every time I changed bullet profile or weight I would likely only load one load per caliber. With micrometer adjustment and high quality, repeatable dies I can easily load for 38spl in 125, 130, 135, 140, and 158 grains, then do the same in 357 magnum and go up to 180 grains. The data I gather is valuable because I can perfectly replicate these loads, so i have all sorts of data for my revolvers. For semi auto I do generally only load one bullet weight, but I still load different profiles between my RMR 147gn matchwinners, my MBC 124gn RN coated lead, and my gold dots, XTPs, HSTs, and whatever else is on sale or interesting.
Sure I can't shoot the difference in handguns nearly as readily as rifles but man I would not want to try to load all the cartridge combinations I load without micrometer dies for handgun- that's why I have one set of more affordable dies and Redding the rest of the way from there