It's not mandatory, but it is common. It's a social norm that has been common practice for many years. It's common both in towns and in the countryside. I woul

It's not mandatory, but it is common. It's a social norm that has been common practice for many years. It's common both in towns and in the countryside. I would say (but don't have data to show) that there's is a slow trend against it. Possibly because of recent high profile abductions...