Why do some Africans "spray " money recklessly in social ceremonies???

What's cultural about throwing money into the air in the name of Celebrations ??

How does "spraying money' of any benefit for the society and the celebrants ???

Why can't such money be made available for the celebrant anonymously??

Why throw the money into the air to advertise their generosity??

Wouldn't it be better to channel such generosity to the deprived and Indigents of the society ??