You are crazy, I love pillows. But if that is what you feel comfortable with than it is normal. Everyone has their own ways of being comfortable, and that is one of yours so you have nothing to worry about.
Just because you prefer your arm doesn't mean you "hate" pillows. I prefer chocolate milk shakes to banana but I don't hate banana. People use the word hate way too readily these days.
66% normal? F**k that, its a 100% normal. I was like that until I found a pillow that suited me. Pillows are different, and they adapt to your needs, like, ther are pillows for every kind of people. I suggest you buy a memory foam one of a very thin pillow, it can be bad for you not having one. Regardless, it is super normal
Lots of people don't use pillows. I say you are normal.
I prefer using my arms, too.