Hi Julia, I am so glad to hear from you. You know, I love boxes and paper bags to play hide and seek in. I do not go outside and run around, so I amuse myself with anything my mom and dad provide for me. Many cats that go outside do not find the need to cuddle up in boxes or bags. They get lots of stimulation from being outside and run after other animals, so once they come back inside, they just go to sleep on a couch or bed. Those cats also do not play with toys very often, because they already hunted outside. I also heard of kitties that got scared and maybe trapped when they were young and hiding in a dark place. So once they got older they don't want to go into dark spaces like a box or paper bag. They associate a box or bag with a tight space they cannot get out of to run away fast. I also like it warm, so a box or bag is some kind of warm shelter for me - sorry mom, I know you need the air conditioning, but for me, I like something closed with maybe a blanket inside to cuddle up and sleep undisturbed. Now Julia you can see that there are many reasons why some cats do not like to sleep in boxes. If I think of more, I will let you know. I hope we can stay in touch and I will hear from you again soon. A big Miau to you and your mom Evi and thank you for your question. Yours, Julietta