Most people only volunteer a few hours a week. So volunteering can be combined with any occupation. It can continue for many years. It has a unique focus on the task. And if necessary, the time given can be expanded many times.
Volunteers are local.
They are part of the local community. They know the needs and the resources. And when disaster strikes, they are already there. In economic terms, this sector today equals the transport sector. It consists of millions of organisations.