Well, because a client needs it.
AWebfactory (your humble servants) are currently developing a new site for helpargentina.org , based in Buenos Aires. They are using the CRM on the legacy site and hope to continue doing so with the new site, and to expand on the existing functionality also.
We have agreed to do so by encapsulating that functionality by basing ourselves on and extending the functionality of the Drupal Salesforce module, in accordance with a GPL license, of course.