Until she was a year old, Puff used to sleep in her crate (a large size PetZazz, no longer made -- it has casters and a folding tongue on its roof so I rolled it from BR to LR or Kitchen as needed). At night, I parked it beside my bed. After she started jumping up and sleeping next to me, she no longer entered her crate as much and the last couple years she's never entered it.
On the thought of taking it with me for my trip back east this June, I tried briefly urging her to go in but she wouldn't.
She does hop up on the bed when I go to bed but sometimes hops down and may spend some?/half? the night in her bed beside mine, and the rest with me. She's always asleep beside me in the morning.
So she has two night-time preferred places and alternates between them.
Recently, I did buy a large (green) Pet Gear Home 'N Go fabric folding crate and opened up the top flap plus the end door and put her dog bed inside it. Puff enters that willingly and is acclimating herself (without her awareness) to using it on our trip this June.
I'm not sure what makes being in her bed alone more inviting to her than being next to me; it's not that I'm thrashing or being a bed hog. But she doesn't like me to be too far away from her or out of her sight so I suspect her desire for "togetherness" is what brings her back.