YES YES YES YES YES My #1 pet peeve with UI. YES YES YES YES YES
  YES YES Priority of permanence should always be given to the
  user's DATA. YES YES YES YES YES YES YES == Worked at a computer
  store once, senior tech. My boss' attitude when fixing computers
  was, "wipe it, upgrade it". Mine was "keep the data, fix the
  software, THEN upgrade". We butt heads a lot. ==