I use mine all the time, particularly for soups. We roast a chicken most Sundays and then I make broth from the bones in the Instant Pot and use the broth to make a soup for lunches for the week. It is so fast! I can make the broth AND the soup on Sunday evening after dinner. I've made lots of different soups, but the usual has the leftover chicken meat and whatever combination of veggies we have on hand from the week, along with fresh herbs (in pots in the kitchen for the winter) and maybe a little splash of lemon juice added at the end to brighten it up. But I've done borsht, chicken corn chowder, fish stew, tomato and red pepper (blend with an immersion blender at the end), butternut squash (also blended)...lots of options.
We used to use it for rice and chicken for Lady D all the time.
She was on a specialized diet of half prescription dog food and half shredded chicken and white rice mixture to control digestive issues. It makes really tender, shreddable chicken (or any meat, I suppose) that would be great for BBQ or throwing on salads, fajitas, etc. We don't eat any red meat and don't do a lot of poultry beyond the Sunday chicken, but I've heard people make great ribs in them.
And if you eat rice, it's a great rice cooker - comes out perfect every time, in just 12 minutes. We don't eat a lot of starches, but maybe every other week we'll make brown rice for Buddha bowls.
The great thing about the instant pot is it has the saute setting in addition to simmer/slow cook/pressure cook options. So anything you would make by browning on the stove first and then adding a sauce and simmering for a while does great in the instant pot. You don't have to dirty another dish for browning like you would with a regular slow cooker, and it cooks things a lot faster with the pressure cook setting. You don't have to keep an eye on it or stir it to keep the bottom from burning. And in the summer, it's really nice not to turn on the stove or oven.
I did a vegetarian tikka masala in mine last night.
I do a lot of homemade veggie-packed sauces (which we put over spaghetti squash or zucchini noodles).
I've cooked butternut or acorn squash in there - lots faster than the oven!
I haven't gotten adventurous with trying to cook multi-part meals in there or bake bread or cakes or whatnot in it.
Most weeknights we just do some combination of fish and vegetables, and I don't use it much for those. But I've heard you can cook fish in 3 minutes in there! Haven't tried it yet. Fish is already pretty fast and easy.