The main benefit of saving, of course, is to help anticipate unexpected needs. In healthy finances, you need to have an adequate emergency fund. The amount is between 6-12 times the value of routine monthly expenses. An emergency fund will help when unexpected needs arise, such as a leaking roof, a sick child who cannot be covered by insurance, or an anticipated loss of income due to termination of employment.
Furthermore, the benefit of saving is to anticipate various unexpected needs in the future. An easy example is when it comes to basic needs such as housing needs. Everyone would want to have a dream home. However, in order to make it happen, you need to save so you can have enough funds to buy a house. This is an example of an unexpected need.
Having savings puts you one step further into the financial safety zone. This is obvious. Someone who has savings will be calmer in the face of various future events that require costs. Savings can be a source of funds to cover these sudden needs. Conversely, if you have no savings at all, your finances are at risk of being exposed to financial problems at any time.