The return on investment doesn't add up on 9mm. I'm not sure I need another hobby. What about 300blk? Anyone loading for it?
You're right-- on 9mm it does not. (It used to, though, when primers were under $20 a box!) But with the others, yeah. And believe me, it's a time suck-- if you don't shoot several thousand pistol rounds a year of the same caliber, I don't think it would justify it.
With a Dillon (or any progressive, I believe), you get time savings over a single-stage, but not as much as with pistol cartridges, due to the need to lube the cases before resizing. Then you probably need to get that lube off before running the rest of the steps. I'm playing with One-Shot lube that allegedly doesn't need to be cleaned off; that may save gobs of time.