Why would you want less efficiency? If we had solar panels which power robots that grow food for everyone, you would want to destroy those solar panels and robots? Is it a 'sin' that humans wouldn't have to work?
It's an interesting question, but it's not a blanket statement I made. In some cases, efficiency might be good, but for example, it's often better to have local made products and locally-made foods.
Also, there is the problem that more efficient use of resources make resources more efficiently used. So, how to find the optima?
It's better to grow what grows best in the local environment. You can't grow everything everywhere. Everyone would be really limited in their choice of food if everything was local. Unless we're using some kind of greenhouses, which might eventually be a good idea. But it would require insane amounts of energy.
I'm not sure you know what efficiency means. From Wikipedia: "Efficiency is the often measurable ability to avoid wasting materials, energy, efforts, money, and time while performing a task. In a more general sense, it is the ability to do things well, successfully, and without waste."
Being less efficient means that you're wasting resources, i.e. using more resources than necessary.
