different guy> different use

Every person on this earth has a different quality and different use, these all created by god so can't be useless, for example we can take perfume, we can devide in three part, every part has same use but different capacity and aroma, its first part can smell less then one hour, and its smell would be so weak, its second part can smell more than one hour and would be magnatism, its third part would be higly atractive and its presence would be there for so long.Same thing happen with human, all human are useful but in different time and different area.