My use of the bathroom door has changed. Here’s the history:
Baby in the house: Bring baby with you to bathroom, leave door open, you’re half naked anyway from nursing.
Toddler in the house: Bring kid to the bathroom with you, sit them on the floor, lock door to keep them from creating any disasters while you attempt to pee as quickly as possible.
Preschooler in the house: Pee with door open to reassure them you are not dead.
Age 5-6: Pee with door closed and locked, otherwise kid will freely enter and ask a lot of really embarrassing questions.
Age 7-8: Pee with door closed, but with child on the other side yell-asking if you have seen their blue socks, not the ones with Buzz Lightyear, but the Thomas ones, and also, can they have a cookie?
Age 9-11: Pee with door closed, then open it to find kid waiting on the other side with fresh bottle of juice they’d like you to open, and also, can they play video games?
Age 11 and up, I am guessing: Never see the inside of the bathroom again, as it is always full of some kid or another.
Remember when a trip to the bathroom meant some nice, quiet, private time? When does that come back? SIGH.