It is quite interesting to know how the laws of a country / world are so intertwined in our lives. They affect almost every aspect, even without our knowing it or acknowledging it. The common man at times is at a loss to comprehend the laws of the country, but it is always good to know the basic laws governing a place.
A traveller to other countries sometimes may be caught unawares, because of some weird laws existing there. Culture varies from country to country and it sometimes is a good idea if the travellers do their bit of research before stepping into foreign soil, lest they commit a mistake they do not know.