I wonder why it is...

I'm sure I've pondered about this before, but I wonder why Persia never
sleeps on my bed unless I'm in it. She snoozes on the couch with me when
I'm reading. She sleeps in the guest bedroom (which is apparently is now
*her* room). But she never sleeps on my bed unless I'm there. I wonder
what difference it makes? The bed still has my scent and her scent after I
get up. Yet when she wants to take a nap, she ignores that bed.

One would think it would be more convenient as well as very comfortable.
Nice blanket, pillows, duvet. Her food and water is right there, too. The
litterbox a few feet away in the bathroom. There are steps to help her get
up on the bed. But she won't get in it unless I'm going to sleep. Cats are
so weird!

Jill