food, water & shelter. I disagree with everyones including clothes - totally unecessary to sustain life. I would also suggest some sort of waste management, even if it's just some place a bit away from your shelter. Can't have that stuff piling up in your home.
That's why you need shelter - as long as you have food, water & waste management there's no need to go outside
You requested what the basic needs are - a job is not one of them. There is no "need" to travel to a job as long as you have the basic needs to sustain your life. - I should have included oxygen in my list, doesn't do much good to eat, drink & poop if you can't breathe
You're getting away from your basic premise. You asked "What is it we really need in life? the basic, the needs and not the wants..." - Your job is simply a means to get these things - not one of the things you need.