Understanding individual financial spending

People need enough money, then need enough of other things to sustain and grow in today’s society, from individual point of view.
People want to spend money on their desires, wants, and needs. To have experience of something, they want to get the thing, to get the thing they need money, to get money, they need to somehow get it. General way is to work, that is to take action for it, based on if others are going to give that money to you for you. In this world, others might give money just to take it back, only keeping the people existing.

Statistically modelling the expenditure model of a population, and then predicting the finances of each individual. All individuals spend, all want to live the life in its richness of its sorts.

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