Saving money in banks is always a good thing. You can use the money for
an emergency requirement like hospitalization of a family member or your
retirement etc. The only disadvantage or downside I can think of is the
fact that, banks don't give a great interest rate on money saved in a
savings account unlike putting the money in a fixed
deposit or investing it in equity instruments or stocks that would give you better
returns than keeping the money in your savings account. Nonetheless,
saving money is never a disadvantage no matter what.