Agreed. The location of our softener means that block salt is the only way to go. There had been a pellet-type one there before, and it had been neglected and abandoned, and had turned into a solid block of salt. That came out when we moved in, and a twin-tower water-powered block salt unit put in its place. It's great.
This is in East Anglia, officially a Very Hard Water Area. The concept of softening all the water supplied in the area boggles the mind, it would take a softening plant the size of one of our counties.