The ultimate purpose of the Host Rewards Programme is to reward Hosts for opening up access to their network of friends and family to give new customer opportunities for your business (and sometimes access to their home for a face-to-face event).
Offering Customers their unique link for the month to be shared out to their Friends and Family can be a great way to increase earnings and at the same time bring more host rewards to your Customers as they could earn each month as opposed to having to build slowly over multiple months of self-purchase.