Dell fills its computers with crapware, collecting fees from McAfee and other vendors to pre-install 'trial' versions.
Most computers today have built in backup software.
I favor pocket-sized hard drives that travel between home and office, syncing with computers on both ends.
Given the volume of PC sales and the way McAfee runs its operation, I imagine there must be thousands of phantom subscribers - folks who signed up once upon a time and left the software behind two or three computers ago.