• Because they can.
  • Because it is easy.
  • Because they are poor.
  • Because DRM.
  • Because they are bored.
  • Because they cannot find the official website and download on other website instead.
  • Because the official dev is a prick, as payback revenge.
  • Because they want to own the software.
  • Because they want to bypass X.
  • Because of censorship, ISP blocks domain etc.
  • Because they want to test the product, and the official product has no trial period included.
  • Test reasons, but some software requires buying the Pro or full version to test all features.
  • Because the official service like e.g. Netflix flag their country and or VPN, tor etc.
  • Because they cannot legally store files on the device, so it is easier to download it.
  • Because privacy and or security reasons.
  • Because they do not want to agree in the EULA.
  • Because they contacted the developer and he refused to give a discount or work something out.
  • Higher download speed.
  • Less to download, repacks etc.
  • Original software is not any more downloadable, officially.
  • Archive reasons.
  • Data hording reasons.
  • Because modding and sharing reasons, which would violate any EULA or agreement anyway.