Warrigal, here they don't say, "No worries." Instead, "No problem" seems to have replaced "You're welcome." That's fine, same meaning.
I find people pretty kind and polite, sometimes overly so. When they see my gray hair, they seem to assume I'm absolutely helpless, even though I am perfectly ablebodied. On public transport, people are always getting up to give me their seat.
The only exception to that is drivers. As soon as they get behind the wheel of a car, they turn into rude bullies. Everybody cuts everybody off, and if God forbid you make them wait a second or two, you get an immediate honk. Many older people have stopped driving because of this. Their slower reaction time makes driving terrifying. I don't know why all the decency and courtesy go out the window as soon as someone is behind the wheel of a car.