I think many casinos see bonuses as an important aspect of their marketing strategy to attract and retain customers. Offering attractive bonuses helps the casino to stand out in a competitive market and gives players an incentive to choose their casino over others. Bonuses also encourage players to keep playing and making deposits, which can ultimately lead to increased revenue for the casino. However, casinos must balance offering generous bonuses with the need to protect their financial interests, so there are often strict terms and conditions associated with bonus offers.