And kids are even worse. I have a king bed. Let's just say by morning I'm on the floor, my 4 kids have taken over the bed and hubby is in another room entirely.
My youngest used to sleep directly on top of me, maybe until she was about 3 years old. My husband was never home so it was just me and the two kids. They slept with me until they were too big for the three of us to share the bed.
We've coslept from the time they were babies and they go to their own bed by age 1 then ideally to their own room. So far the ideal has not been reality. You give me hope that someday I'll get the bed to myself again, lol.