The habit of squandering money should not be encouraged.

Squandering : waste (something, especially money or time) in a reckless and foolish manner.
Saving : an economy of or reduction in money, time, or another resource.
Collecting : bring or gather together (a number of things).
Hoarding : a large board in a public place, used to display advertisements.
Discarding : get rid of (someone or something) as no longer useful or desirable.
Antonym of Squandering is Saving