iPad’s seem to be in some netherworld with no real purpose to them. They are not phones or laptops and so the main use case outside of consuming media at times is for conference room and reception kiosks?
But, they are excellent for media consumption, particularly reading and marking up PDFs. I am able to focus while reading in a way I cannot on a computer. Procreate is amazing (drawing brushes with a pressure sensitive pen and layer/mask support all in one). Great for playing Civ on a flight. And it does all those things in a comfortable form factor while being fundamentally a pleasant device to use.
All that considered, the iPad Air is not that expensive, and it will probably last you a decade before it needs replacing.