Thursday Thoughts on Other Stuff: What is wrong with you're welcome

What is wrong with you're welcome? Twice today, November 19, I have said Thank You on two occasions and both times the people responded to me with No Problem or No Prob. I was taught to say You're Welcome when someone said Thank You. Is there something wrong with You're Welcome? I didn't think there would be a problem when I made the two request, so did the people who I ask for information think there would be a problem. If I had thought my request would cause a problem I would 't have made the request in the first place.