Why do people create visions of how the world should be?

The reason is because they want to have a world where it agrees with their view point, nay it be political, physical, mental, social, and/or emotional changes to the world and the people in it.

gatsby's clothes have a symbolic meaning, as the use of colour and fabric in his clothing demonstrates his hope, dreams, and wealth. gatsby's clothing symbolizes his wealth through his torn shirt, his silver and gold suit, and his english shirts.

his occupation are

businessman yachtsman soldier entrepreneur bootlegger