Where’s the thread about “No problem”? I hate that expression and would enjoy venting my spleen.
Better not call Saul, then.
Definitely sounds patronizing. Christian Bale’s rendition of the phrase perfectly captures the patronizing, condescending connotation of the phrase itself.
“My bad” has been around for, oh, 900+ years. 
Not being in the US I have no idea, but as a general rule, I’d assume someone saying “Isn’t that nice?” in a context not involving babies, kittens/puppies, or something like that was intending to convey the message “Good for you. I don’t care.”
People use it here too but only if they’re cunts.
No worries.
I say “no problem” all the time at work. What else are you supposed to say when someone thanks you for something miniscule? “You’re welcome” seems to make it too big of a deal.
But “No problem” is what you say to someone who just apologized to you. It implies that you’re waving off their apology as unnecessary (which is a polite thing to do) but it essentially implies you’re in control of the moral transaction. “You’re welcome” keeps it as an exchange between equals.
“Oh, I’m sorry, I spilled a little bit of coffee on your sleeve.”
“No problem.”
Properly used.
I have a colleague who says it about twenty times a shift. About things that no one on earth would every consider would be a problem.
“We want to go over to the Starlight Room. Can you top up the burette, please?” “No problem.”
“Jason has a headache. Is he due for panadol?” “No problem.”
“Harriet hasn’t opened her bowels in 10 days. Is there something she can take?” “No problem.”
It gets boring very quickly.
Why, thank you! I felt right at home in that thread.
The Thai prime minister from 1988-91 used “No problem” – or the Thai equivalent – as a catchphrase, when he was both kidding and serious. I recall the whole country fell to using it.
But wouldn’t it sound weird to say “you’re welcome” every time someone thanks me for pointing in the direction of the restrooms? That’s really not what I would consider a moral transaction anyway.
Sweet as.