Even the most independent person is extremely dependent. The majority of us are where we are b/c of a choice that we made. My family is living the life we live b/c of choices my dh and I made. Had we not made this choice, and many others pertaining to our life, we would not be living in the country with chickens, eggs, garden, hunting fishing and doing alot of things ourselves.
If we lived in town, that would have been a choice we made, and that would entail shopping at grocery stores for our meat and veggies.
Like I said, even the most independent person is still extremely dependent. So you provide all your own meat and veggies. You still need the grocery store to supply you with staples. You still need to be dependent on utility companies for your heat, hydro, water, telephone etc.
We are ALL vulnerable, whether we are living the "self sufficient" lifestyle, or living in an apartment in a highrise in Toronto. So you live on a farm and have animals--can you grow all your own feed for your animals? You hunt. Do you make your bullets and shotgun shells yourself? How about the gun?
There are ppl who don't have much of a choice about where they live. And, some people prefer to live in towns, cities and the like. Some ppls jobs require they live in towns. I seriously don't think we should be judging ppl on their choices, or criticizing them just b/c their choices aren't the same as ours, or thinking its sad b/c they have not killed an animal. Bottom line is, while we may be disagree with how others are living, we really shouldn't snub our noses at them either for their choices. I'm sure they have a very important role in society too.
I think expecting everyone to be able to kill their own food is a little extreme. Not everyone is up to it, which is great, b/c that is what makes everyone different, and we need to embrace that. If everyone were to live off the land and be "self sufficient", then you can kiss your internet, TV, telephone, hydro and gas, natural and fossil fuel--good bye. We "need" ( as in dependence

) these city ppl to provide these things for us.
However, what I do find sad is the fact that alot of kids, and even adults (who live in cities) have no real concept of where their food comes from. Everything is de-personalized, and it shouldn't be so.
If the world were to cease to function as we know it --and we did have to go back to grassroots living, I don't think the population would suffer. We are a very adaptable species. We have adapted to how we are living now, I have absolute confidence that if the need arose, ppl would be able to learn how to do it all over again. Not to mention that they would have history (and ppl like us)as a teacher.
I don't think we have strayed, we have evolved and adapted. Each and everyone of us is vulnerable and dependent to an extent. Like it or not.
An old native American saying--Don't judge a man until you have walked a mile in their moccasins.
(disclaimer: not meant to offend)