> The reason people in the US are less traveled is because you essentially have to cross an ocean to go anywhere.
Australians manage to travel more than average despite being an island surrounded by ocean. The need to cross an ocean discourages travel much more in a culture which thinks "two weeks paid time off, don't even think of taking them both at the same time" is an adequate amount of vacation allowance and thinks extended mid/pre-career breaks for international travel are a weird anomaly rather than the norm.
Australians manage to travel more than average despite being an island surrounded by ocean. The need to cross an ocean discourages travel much more in a culture which thinks "two weeks paid time off, don't even think of taking them both at the same time" is an adequate amount of vacation allowance and thinks extended mid/pre-career breaks for international travel are a weird anomaly rather than the norm.