What prevents you from upgrading to newer operating system versions? [closed]

The current one just works!


I always format / install. NEVER upgrade. Keep it nice and clean. too many places crap can get lost or dup'd.

But if u mean going from older version to a new version, it's generally

  1. Price
  2. Having to re-install everything again.

edit: This is referring to Windows OS, not linux, etc.