Why I am a cabbie.

I am unreliable because my wife has a series of medical conditions that may call me to take her to one or more doctors per week. Am I whining? I think I am showing gratitude to a wise friend that directed me to this life because of its flexibility.
This morning I woke up to a wife that wanted to go to the emergency room that she didn't want to go to the day before because of a series of falls. Their diagnoses that she was dehydrated and the pain was cured with two Tylenol tablets but no broken bones.
Thank you, David, for this recommendation where I found a job/career that I finally enjoy. It is a mind game because of human greed we can never make enough money. So thinking on the subject - how much money do I need to make? My costs are close to $500 per week. So if I take in $1000 per week then I should add $26,000 per year to my income for a total of about $50,000. To me, that is good enough at this time. After I go through these hard times I should be able to save some of that after paying off all my bills that keep popping up. I no longer have a need to collect "things" and as I think on that that is a lie. I would like to tear down my back yard patio and make it a green house. I have another $900 dollars worth of expenses looking at me in the face to pay before I move a bit forward. I am sharing my life with everyone else that is experience the same stuff I am. I know I am not different. I am just as frustrated as everyone else as in how does this come about?
I do not understand how a man and a woman that make $27,000 per year without working need to work to pay for food? Why is that? I am going to have to look at my spending. It is a mortgage, insurance, electric, gas, water and phone. That takes up $27,000 per year and then I have to eat. What about those that make less?