Hey you kids, get off my lawn!

  1960s: 
  Happiness Language:    Lisp
  Hack-it-out Language:  Assembly
  Bread and Butter:      COBOL
 
  1970s:
  Happiness Language:    Lisp
  Hack-it-out Language:  FORTRAN
  Bread and Butter:      BASIC

  1980s: 
  Happiness Language:    Lisp
  Hack-it-out Language:  C
  Bread and Butter:      QBasic

  1990s:
  Happiness Language:    Lisp
  Hack-it-out Language:  C++
  Bread and Butter:      Visual Basic
 
  2000s:
  Happiness Language:    Lisp
  Hack-it-out Language:  C#
  Bread and Butter:      PHP

  2010s:
  Happiness Language:    Lisp
  Hack-it-out Language:  Python
  Bread and Butter:      Ruby

Original thread:  http://news.ycombinator.com/item?id=1893000