The more I learn the more I realise surviving alone truly alone long term is almost impossible.
Not impossible, but unlikely.
The human spirit to remain alive is as amazing as the human bodies capacity to deal with famine. Even the meekest in society would surprise themselves at what they would do in a survival situation.
You have to remember that in the past humans have eaten humans to survive... others have endured conditions we couldn't imagine having to deal with... the spirit, or the will to survive as it really is, of the human being is something that we should be really shocked at. We will make the decisions necessary or we will die, its that simple.
Match that up to the choice to be a vegetarian... it's a choice made by those with the luxury to do so. I do not mean to be insulting, but given the choice of life or death on a bacon sarnie... you can kid yourself that you'd forgo the pork delight for your morals, but in real life, you'd eat it like a camal drinks water after a week in the desert.
We have these great dilemmas as a Western society, these moral decisions to make based on how we feel... but we feel that way after a pampered existence. Starve for month, then look at a roast dinner and turn away because of the meat content.... then I'll believe you're a true veggie.