My friends Kapil & Bharat are responsible for me to write on this topic. 'Want' and 'Need' are not one and the same. We as human beings are derived from the 5 entities called 'Pancha Budas' Earth, Water, Air, Heat & Space.
Food comes from Earth which is the grossest of the five elements. Veda calls anything which can be seen with 5 sense is the grossest. Water has no smell of its own hence one sense cannot recognise it. Space is the most subtlest of all which none of the senses can recognise it. Moving from air to heat you will find one senses looses its ability to cognise it. Air cannot be seen, smelled and tasted. Subtler ones are more vital than the grosser ones!
We 'need' food and water to keep ourselves alive which is the very plan of creator. Although our body has 65% water if it comes down below 60 it is dehydration. We can survive for 90 days without food, few days without water and only few minutes without air. These are the 'needs'. All else we are striving for in life are 'Wants' which leads to Greed, jealousy, hatredness, anger and all negative emotions.
Beware of the difference between 'needs' and 'wants' and be prudent or else you will be in deep trouble.
Whole of my heart