I try but it always dont happen :) Hubby is always freaked out that they are waking up durning sex it is like hell it's 3 in the morning !!! He's not adjust to well to the new set up of the bedrooms of are new home that the dummy picked and had built !
Yes, when the door is open he always could come and go as he pleased. DH was afraid he'd walk in on us having sex and pounded it into his head to knock if it was closed. It worked, we never got caught, our privacy was respected and he still felt welcome.
Children should be able to get to you at any time you are in your bedroom. Understandable that a child would have to knock during sometimes, OK but when you are done you need to unlock and open the door. During the times you are not in there, yes a child who doesn't understand boundries yet, a shut door may be neccesary.
We just always put the dog and cat out and shut the door. Then got up and let them back in and got up for the day, since we were morning people.