Do you let your cats sleep in the room with you?

Our Boots sleeps in my mom's bed. He of course thinks the bed is there just for him, and will often chase after her feet and bite them. Other times he lays at the foot of the bed looking like a royal king with us his servants at his beak and call. Other times he loves crawling under the covers and curling up in a ball and staying there for hours at a time.

I don't want him sleeping with me as I don't want cat hair all over my sheets.