If u r keeping money aside for emergency then yes Debt MFs r fine. Otherwise if u r investing the money to get that extra alpha then debt MFs r a mistake. It is painful to see money rotting at 6.5-6.7% interest in debt MF while the inflation itself is >7%. (And not to mention rupee falling faster than ever). For purely investment purpose we need atleast 7.5% interest which Liquid MFs can never achieve.