Pros:
Having extra money or reserve money for emergencies
Prevents you from going broke or bankruptcy
Cons:
Budgeting may affect your quality of life: cheaper is not always better
Inaccurate amounts. Not budgeting enough or directing too much money on things that don't take priority in life.
Time consuming: It takes time to make a budget perfect for you.
Pro/ Con: Consistency May encourage you to stick to budget or discourage you.