Is it normal to sleep without a pillow?
Yep.Totally normal
Yes, it’s normal to sleep without a pillow. Some people find it more comfortable, and the best setup is the one that lets you sleep comfortably without waking up sore.
Absolutely. People have different preferences, and whether a pillow feels good can depend on how you sleep and what feels comfortable to your neck and back. Some people sleep on a flat surface; others would rather be surrounded by pillows like a tiny cushion fort.
If you wake up feeling fine, there’s no special reason you need to use one. If you regularly wake with neck or back pain, try changing your setup and see what helps.