I should probably say that not using dish soap is my preference.
- Many dish soaps are oil based. Oil and soap residue can affect the quality and appearance of your beer because they interfere with head retention, causing the beer foam to dissipate rapidly.
- Some soaps will counter-act with sanitizers, making them useless.
This is debatable. As stated above, it's a preference.
Organic or not organic, I'm sure most people who wash with with dish soap, rinse really well with hot water, and have no problems.
Many people use the dishwasher too - never had a problem with head retention and their glasses are spotless.
Some folks will say that it's the post soap rinse that really matters. Not the fact that a person uses soap.