While it's definitely worth something personally for you, since it improves your marketability as a developer/IT professional, most of the emphasis in Microsoft SharePoint Certification and Microsoft's certification program in general is geared towards the the IT and software companies.
The process is simple, as I'll demonstrate in an example of this SharePoint certified company:
- You apply for a job at the company, and they hire you because of your skills, but also because of the advantage you have for them by being certified (explained later).
- They acquire more certified developers, pass all sorts of examinations, and because they meet the quota for employed MS-certified professionals, they're awarded the Gold Partner status.
- Their newly acquired status gives them access to all sorts of direct benefits, among them free MS licenses and MSDN subscriptions.