Travelling opens ones eyes to other ways of life, the similarities and differences.
Coming `home` and having a visitor from a country you have just visited come to stay opens your eyes about your own country.
Melbourne is very multicultural, and the Yarra Valley a wide open space.
You notice the wideness of the roads, the faster traffic, and after the brief stop at a winery, the difference in road laws. Japan has a zero alcohol limit for drivers, perhaps we should have that here? Motorcyclists in the first year of their licence are zero, as are learners, then they go mad and accidents due to drink driving occur.
Travelling to another culture and living with the locals opens your eyes to the commonality of life: family.