About the Dutch language
In Belgium the language is known as Flemish.
It is a West Germanic language and is closely related to German and English.
So why learn Dutch?
Holland is a very interesting and welcoming country to visit. Its principal city, Amsterdam, has much to offer in the way of sightseeing, a pavement café culture, and famous art galleries. A knowledge of Dutch will encourage hospitality.
There are many Dutch people working and living in countries outside Holland and the ability to converse in Dutch will enhance friendships. Whilst most younger Dutch people speak English, many older, less-travelled people do not.