That is exactly my point. You can take the full blown wav and transcode to any other format you need out there. It's simply an issue of flexibility. Either format gets the job done. It's simply a trade off of feature sets. I like the feature set that gives me the most compatibility and the ability to transcode into another format easily.
The 'save' space argument is a bit of a red herring. I still have yet to see a reasonable argument made for the space issue with 2TB drives now available for $60. Trust me I get the Newegg newsletter everyday