We always leave my daughter's and our door open so if she needs us she can come find us. No stair gate here (she's 2.5)
@Natalie my son is 19 months and hasn’t learned not to go face first down steps yet and the dog also has a annoying habit and needing to go check on him throughout the night if she’s allowed upstairs
Bless him. We had one until she was almost 2. Moved house and have less stairs/much easier to manage steps so realised she didn't need it anymore. They are good for coralling pets
My only concern with doors open while sleeping is fire safety. In the event of a fire, closed doors stop a fire from spreading while open doors create a path for fire to spread across the house