In response to "Thank You" I grew up with "You're Welcome". But now I hear "No Problem" most of the time. It seems a little strange to me. Was there a problem possible? Does the response mean that the person prevented the problem you almost caused? "No worries" is a little like "no problem". Was there something I should have been worried about? A possibility from English Language & Usage : "It was no problem for me to hold the door for you, because your ease of access is more important than me getting to my car faster." Or Maybe "The main difference is that you're welcome is meant to be polite while no problem is meant to be friendly." I like this idea even though it's a bit hard to follow: "Based on the other answers it seems not everyone has the following connotations with both terms, but I would argue that "No problem" implies that you did something out of
Sharing my thoughts, feelings, and experiences.