@Solar Is My Name - I debated for awhile before buying one since I wasn't sure how often it would get used, but I definitely do not regret my purchase. Surprisingly, we use it most often for meats rather than for sides and reheating, which were what we thought its primary use would be. Steak, burgers, chicken, pork chops, and bacon all cook beautifully in the air fryer, and the unit keeps most of the smokiness and lingering smell inside. (Since my kitchen is located in the middle of my home with almost no ventilation, this has been a fantastic bonus for me.)
And of course, as you'd expect, air frying potatoes into french fries or reheating a slice of pizza is quick and easy with fresh, crispy results. We also enjoy whipping up some refrigerator biscuit-based cinnamon sugar bites for a simple sweet treat that takes just a few minutes.
If you want more details on the "how to" aspect to help determine how useful this applicance might be in your life, I highly recommend visiting the "Cooking 101" section on air fryers on the Blue Jean Chef's website, bluejeanchef.com/cooking-school/collections/air-fryer (and you can search for air fryer recipes there as well to find some tasty things to test).
Good luck with your decision!
ETA: I neglected to mention that we rarely use ANY oil in our air fryer cooking; when we do, we use the EVO sprayer to ensure that we use very little and that only the amount we want is being applied. Just a half-teaspoon or so does help those fries achieve the golden goodness you want them to have. 