I try to do everything at least once the old fashion way so I know I can do it.
I have 3 scythes. A full on grass blade, a intermediate blade and a brush blade.
Using the grass blade I have cut hay for 90 days of winter hay for 6 goats. Was not enough for the whole winter, but doing it, I know I can, and how. Was a great way to learn how to properly hay too. Seems nowadays most farmers dont know how and end up producing poor quality hay.
As Namelus mentions Peak Oil can and will kick us in the teeth.
Also read a few articles earlier this year about the low cost of oil, the oil companies have not invested in exploration. More than a few investment houses say this could lead to a supply shortage (in comparison to demand) as early as 2020. This shortage could see a spike in oil prices. Some have said $200 a barrel oil is a real possibility.