My cat has a cat bed, it’s navy blue and it stays in a travel carrier for the airlines for her. I can fit it and a litterbox in there, and the litterbox is towards the front of the crate since I figured out my cat prefers to lay in the back away from the most commotion. It took me finding her in her litterbox, though, to figure that one out… oops.
Anyway, aside from using it during travel (car, airlines) she shows zero interest in it for the house. Which is fine by me, I don’t really have a great place to put it anyway.
But some cats LOVE these things (like the one in this first photo) and deserve to have their wishes met say… on Christmas this year?
Or some other holiday that you can make up just to get it for your kitty sooner! 
From my experience, my parents have always had animal beds and they’ve always used the heck out of them (sprinkle a little cat nip around it if your cat shows no interest…) but also I’ve known people who don’t use them and their cats still find great places to sleep and hang their heads!
If you’re still sold on the cat bed, at least get a cool looking one. Here’s a link to get you started on your cat bed shopping! Cat bed galore!