Exactly:

• It reheats food quickly with a better texture than the microwave
• It keeps food warm once I've cooked it and i can use it to keep part of dinner warm while I cook the rest
• It cooks food evenly because it is a convection oven, and starts the process quicker because it is small
• It replaces my toaster
• I can bake one thing in the oven (fish potatoes, broccoli) while the other cooks in the air fryer, especially helpful when they have vastly different cook times and temperatures

Precisely this

Mine can also dehydrate food super quickly with a variable fan speed, which my traditional oven can't do without burning through a ton of unnecessary energy

I recently got to buy myself a new oven, and I got one of those double compartment ones for exactly that reason, and it's awesome, especially for pizza.

Obviously I'm not suggesting you replace your oven just for that, but if anyone is in the market for one I highly recommend a double compartment oven

I'll give you that one. The small size is the only thing they've got going for them, in my opinion, since that makes them quicker to heat up. As for the timer function, I think most modern stoves have that? I know mine does, but I guess your mileage may vary.