

Always, every time.
“Why do you want to work here?”
“Because you have an opening, and the pay looks commensurate for the responsibilities. So far, the role looks like a good mutual fit. But I’m going to need more details to ensure we’re good for each other.”
Your point is spot-on. Fully agreed: modern dishwashers are way more energy- and water-efficient than manually washing dishes. Like at least an order of magnitude.
I personally struggle with this one for different reasons. Energy and water consumption are a very tight concern since I live on a sailboat. I can’t just crank the tap to get more water. Marine health is also a concern since, ya know, it’s all around me, and I eat some of these critters around my boat. Surfactants in detergent are deeply problematic in the environment and are not removed by most wastewater treatment. Moreover, surfactants impede wastewater treatment because of the emulsification interfere with aerobic treatment (Poland seems to be actively working on the problem). FWIW, manual dish detergent also has surfactants, especially SDS/SLS, so manual washing is not a panacea.
I don’t think there is a “right” answer to be had. But it sticks in my craw both ways.