Wife keeps saying she wants to get one of these. I don't get it. What is the rage about these things? Is the cook time that is cut back or what? We got an air fryer a couple of years ago and we really like it. We already have like four different crock pots in the house. I need some convincing reviews from folks that have one. I even see there is even a ninja brand instapot. We already have the ninja blender and coffee maker, I don't think we need another ninja appliance in our house. TIA!!