I load .32 S&W Long (wadcutter) and .327 Federal Magnum, and in another couple of months I will be loading some .32 ACP too. And on the occasion where I do load with the (fantastic) Hornady XTP bullet in 85 or 100 grain weight, you can bet that those rounds are the most costly I build, and even those are a fraction of what factory ammo costs.
Above and beyond that... handloading is extremely enjoyable for me, for many (most?) of us and it's a whole new world/hobby and a way to do "gun stuff" at home without packing up, hauling out, setting up, shooting, cleaning up, packing out, hauling home, unloading, cleaning, and putting away shooting gear.
No... it isn't shooting, but it's doing enjoyable gun stuff at home and you get better ammo and you get it for peanuts. And there's many (MANY!) of us who love to help with advice and encouragement.
If a person has two handguns and both are 9mm, he is probably not the best candidate ever to handload for the cost savings angle. A box of 9mm range fodder is $10-$12. I make mine for about $5 and that's with a 124gr plated slug. But if you love to shoot .357 Mag, .44 Mag, .500 S&W or something odd like .32 S&W Long or .32 H&R Mag then you will gain so much from handloading simply with regards to economics.
If you do it... the hobby angle may make you say "why didn't I do this sooner?"