Both of my Yorkies have slept in the bed with us until the older one, Bentley, got 15 yrs old and developed kidney problems...lots of drinking and a lot of peeing. My husband had to sleep downstairs so Bentley could get to water, pee pad, and his own bed. Things still haven't gotten back to normal with Porsche, now 13 and 1/2. She wakes up around 3:30 am and wants to go downstairs but refuses to stay alone. Either my husband or I must sleep downstairs with her. 

We are slaves to our babies, but I wouldn't change anything.