My old dishwasher dried without Rinse Aid OR I never had to use Rinse Aid before.
Today's dishwasher uses less energy than older models. Rinse Aid can help your modern dishwasher achieve better drying.
I use the All-in-One detergent pack
The All-in-One dishwasher detergent pack may contain Rinse Aid, but the pack is designed to dissolve in the main wash, prior to the final rinse, so it isn't necessarily effective in promoting drying. Using Rinse Aid separately in the dispenser further assists drying during the final rinse.
I don't want anything coating my dishes
When used, the dishwasher automatically dispensed about 3 milliliter (less than ½ teaspoon) of Rinse Aid during the final rinse of every cycle. Rinse Aid changes the surface tension of water, making the water (and Rinse Aid) "run off" of dishes promoting better drying.
The walls and door of my dishwasher are wet
Rinse Aid can help your dishwasher retain less moisture on the interior walls and door.
I don't want a chemical added to my dishwasher
The primary ingredient in Rinse Aid, a surfactant, is also found in the dishwasher detergents. In dishwasher detergent, surfactants remove greasy food residues from dishes, suspending it in the wash water and preventing it from re-depositing on cutlery, plates and glasses. They also help water to drain from these items during the wash cycle.
I don't want to spend any more money
Rinse Aid costs pennies per cycle. Rinse Aid can help you save time and effort by having fewer dishes to hand dry.