What are the advantages and disadvantages of a stable dividend policy?

Stable dividend policy has following advantages:

1. It creates confidence among shareholders;

2. Stabilizes the market value of share of the company;

3. It helps in marinating the goodwill of the company;

4. Helps in giving regular income to the shareholders.

Disadvantage: (well I am also looking for disadvantages so if anybody knows the answer then plz reply)