I don't think my reason for owning one will change your mind. You have a good set up already for pizza and I suggest you stick with it unless you are unhappy with the pizza quality you are getting.
My primary reason for making my own pizzas is that I like pizzas a lot and putting in all the extra effort for small improvements is worth it for me. It probably is not for most.
I have a 12 inch Ooni pizza oven and don't remember exactly how much I paid for it 3 years ago. I think it was around $300. It can make only medium pizzas, but it is portable so I can take it anywhere. Last weekend I was asked if I could make pizzas for my church youth group and I happily carted it there. (I found out that most teenagers these days want very few toppings or none at all on their pizzas!). This also suggests another of the big advantages of the dedicated pizza oven is that it can rapidly make many pizzas. I cranked out 16 pizzas very quickly that day.
The other advantage is that you can make different style pizzas which require different precise temperatures. Neapolitan style requires 900-1,000 degrees, New York style requires 700-800 degrees, while Chicago thin crust requires 600-700. My pizza oven can reach these temperatures in less than 10 minutes and the pizzas are done in 2-3 minutes. You can make these pizzas in your indoor oven or a Traeger by cooking them longer, but the crust won't come out correctly (leopard spots!). Yes, pizza ovens make superior pizzas.
The primary downside of a pizza oven is that it is a uni-tasker, you can make very few other things on it besides pizza. My other 3 cookers (gas grill, griddle and pellet grill) are quite versatile. Is it worth it for you to have a dedicated pizza oven? For most the answer is no.
The oven is small but you need a table for it. I purchased this cart for ~$100 and it is perfect. It also holds the propane tank and my pizza tools: