All of us have different eating patterns, or rather cooking patterns and what devices we us depends on those. I use my air fryer less than I expected, mainly because I do not eat lumps of meat. I do not like chicken so never roast a chicken piece in it or anything like that, on the other hand we eat a lot of casseroles and stews, so my slow cooker is constantly in use as is my microwave. I also have a griddle on my cooker so things like sausages, bacon, tomatoes get cooked on the griddle.
We have a lot of soup, but I found a soup maker more trouble than it was use, thankfully it broke under guarantee, so I was able to get my money back.
We all do things our own way, and find what suits us. DD has a small airfryer and uses it constantly.