When I was a girl, my mommy taught me to say "please" when I asked for something and "thank you" when I got it. And when someone told me "thank you" that the proper reply was "you're welcome".
Seems like no one says "you're welcome" any more. In fact, when you do hear it, it seems to have an air of smugness or sarcasm about it. I usually hear, "My pleasure" or "No problem" or "Thank you" as a reply to "thank you".
When did "you're welcome" fall out of favor?
And what were they ever welcome to?