Growing up, I have seen abundance of banyan trees. In-fact my native place was informally known as banyan city owing to its huge reserves of the trees. Banyan tree like other trees do not bear any fruits so on that front, it might not sound as prospective as a mango tree for instance. However, banyan trees are huge in size and they can provide lots of shade underneath it.
Recently Cape town came in to limelight for being the first city close to run out of water. The government put regulations in place in the month of February to force 50 liters supply per person in order to salvage the situation. However, with the current crisis and severe drought since last couple of years, situation will only become worse henceforth.