"what we need" and "what we want"

Some items are what we need and what we want,which like LOVE,HEALTH,FRESH AIR,andHAPPINESS,ect.These items can make our life better and "smoothy".But most of expendable materials are "we want", not "we need."

We buy those stuff only for being satisfied the transient and impetuous desire.All we need is only keep life goes on,all we want is much more than our imaginability.When we want more,we need more "stuff"to cram this black hole.What we need is a singular number, neverless, what we want always is a plurality.

We don't need to be famous, but we want to be famous.We need a cup of coffee to fresh our messy morning,but we don't need a coffee must named "starbucks." We need music to make
life better, but wedon't need a mp3 must named " nano."
What we want and what we need cross to a huge desirous city.The speed of making problems
is faster than finding out solutions for this showy city.