"mm" wrote in message
I don't think that is to protect kids especially. One can lock
himself out of the bathroom even if he is the only one who lives
there. So it's just a way to open the door if the door is locked and
then closed.

Look up the statistics on falls, heart attacks, and other bathroom injuries.
It is one of the most dangerous rooms in the house and for safety, you want
a simple way in. The lock is meant for privacy, not to keep out burglars.