Most folks just don't want a .32
For my self defense needs, I just didn't see a need for it. I know it is frequently stated that the .327 magnum has energy numbers that rival the .357 magnum. But then we get into the whole discussion about what is most important in a SD round: energy, penetration, caliber, etc. I would have to see some convincing real-world data to make me want to switch from known calibers (.38 SP, 9mm, etc.) to something that is unproven.
The extra round in my snubby revolver would be nice, but it wasn't enough to make me want to jump into a new caliber. Maybe in the future, but not at this point.