I like 'em (true DAO, not Safe Action) for safety (hammer down safe when carrying) and the fact that the manual of operation is like my revolvers, just draw and fire. Since I carry revolvers a lot, I don't want to have multiple systems for my carry, KISS.
I think guys who never learn to shoot a DA revolver properly and learn on something like a Ruger Mk2 or something, hate 'em because they require effort to learn. It's the couch potato generation, ya know. Once you learn to shoot DA, you love it for its speed, simplicity, and accuracy, but it must be mastered.
To me, DAO triggers on autoloaders are smoother than DAO revolvers. The trigger doesn't have to rotate a cylinder, just draw back the hammer and release it. If you can't shoot a DA revolver, stick with a single action or safe action auto, unless you wanna spend the time and practice to become proficient with the DA. Don't tell me you can't cause I have seen this guy named Jerry Miculeck shoot. I've also known some very good PPC shooters. Old school, ya know?