Inequality

What can be said about inequality, is it inevitable or created by human like us, this is one of the word that make my mind to think become atheist, why this word exist in this world every religion gives answer in its own way but i have not find a suitable answer, if we talk about reincarcaration what is starting point of inequality, what is reason for birth of first handicapped person, Most of us think that we are successful because of our hard work or blah blah but do we being the same human being if our initial conditions are not the same, in mathematical term solution of diffrential equation solution depends strongly on initial boundary condition, who decide initial boundary condition and why not all of us get the same.
When we are living in free society we have every right to do what we want to do, but i feel it very depressing when i am in condition to live a luxurious life while millions human being like me are starving of hunger, i never think twice to spend 1000-2000 in a day while the same amount can stop farmer from doing suicide, or my one day pleasure is equal to one human being life, is it not frustrating Why such a difference in world and what can we do for that? This is a question that is disturbing me from last 2-3 nights, more i think about this more i become disturbed.
I don't find a solution,but this thinking make me more humble and sensitive, if things are random is it not my luck that i got a good boundary condition and able to write a blog while many others who assigned life at same time as mine hardly know how to read and write.
Do i have to leave everything and go to leave in village if a talk about these high philosphy or can i make a difference by changing my life style from here also, should i work hard to become a millioner or work to make 100-1000 people like me who can live a comfortable life, for example instead of buying a costly car i can buy a decent second hand car and use rest of money to do something that can reduce this inequality by a small fraction.