You also have to watch for the attempt to extract a reason from you. Sometimes it'll be a bald "why not?" but sometimes it's more subtle like "Oh, spending more

You also have to watch for the attempt to extract a reason from you. Sometimes it'll be a bald "why not?" but sometimes it's more subtle like "Oh, spending more time with the family, huh?" trying to leave you socially obligated to affirm, deny, or correct it. I find a very neutral "mmmm" to be a pretty good disengagement; you clearly heard them, but it doesn't affirm, deny, correct, or really leave any opening for them to wedge into without crossing over the politeness line to the point that you can openly call them out if they keep pursuing it.