The thing is, self-rising flour is like a specialty tool - it's amazing for specific jobs, but not so great for others. Using self-rising flour for recipes that don't require its special properties can result in over-leavening or an off taste. It's like using a chainsaw to cut a piece of paper - it's just not the right tool for the job.
On the other hand, all-purpose flour is like a swiss army knife - it can be used for a wide range of tasks, and you can always add your own "special ingredients" (like baking powder and salt) to get the desired effect. So, while self-rising flour is amazing for certain recipes, all-purpose flour is still the ultimate go-to for most baking tasks.
Self Rising Flour Versus All Purpose Flour | Detroit Chinatown
