Yes I'd agree with @likedeeler that I too feel sustainability is more important than self-sufficiency. We all have unique talents and I feel that it's better that we all work together to have a sustainable lifestyle and humanity overall than try and be self-sufficient.
I'd like to live in a sustainable property one day, but have no desire to build one, just not my talents! I support those who provide us organic, environmentally food and products but again have no desire to grow my own.
I love your dreams and desires and we need people who want to create sustainable housing for those of us who'd like to like in it but just aren't going to build our own!
Together we can create a better more sustainable world and humanity.