Users who want to create a safety net before disaster strikes.
Users whose computer is completely broken, won't boot, or needs a completely fresh installation of Windows.
If your computer boots but is acting sluggish, or if you need to recover lost files rather than just the operating system, third-party tools are necessary. Most "Free" versions of these tools are actually "Freemium" (limited features until you pay).
This is not a tool to fix a current crash, but rather a tool to prevent future ones.