hi yes i agree but even if you covered your whole house in solar pannels it would not cover your energy needs . From bushcraft the most important things we need to survive are water next we need shelter then warmth and food we are not self suficiant in energy and even into the forseable future will not be unles there is a change in priorities , nor are we in food and the problem there is we are used to cheap imports often at the expense of the producing countries environment . (did you see RM on india in the bay of bengal and the problems the global demand for prawns has had on the local population ) Equally Argentina has caused vast damage in its quest to produce cheap beef . Of course i agree with you we do not know what new advances will be made but at the moment its a profit driven world