There's a lot of errors here for such a short thread.
Western Digital (or Seagate, or Toshiba, or La Cie, or...) pre-packaged single-drive mechanisms do not require any additional software to work on Macs. They just don't. You can stamp and scream and claim that to be the case, but since they all pretty much use the exact same chipsets, and are all standards-compliant USB mass storage devices which by their definition do not require driver bootstrapping, you'd be wrong. "But..." nothing. You're wrong. Stop saying that.
Many drives come with additional software or a software suite as a value-add that may provide backup functions, backup to the cloud functions, etc. That software may or may not be useful to you, but it is not required for the drive to be a fully-functional external storage device. Use it with Time Machine, Carbon Copy Cloner, or just as plug-and-play storage to your heart's content without ever installing the manufacturer's software.
The software that came with certain models of Western Digital external drives had a problem with OS X Mavericks 10.9.0. This was due to an interaction between a Mavericks bug and a bug in the software (double whammy) which could, during the initial install of Mavericks, cause data loss. Clearly a critical bug, but only affected people who were actively using the software on certain WD drives during Mavericks install while the drive was connected and turned on on certain Mac models. Yet going by the internet, you'd think all of civilization had collapsed.
Buy what provides the storage you need at the price you want to pay. There are plenty of valid reasons to choose one brand or configuration over another, or to match a mechanism with an empty case. But at the very least, understand what those reasons are and don't make decisions based on mindless misinformation.