What are the pros and cons of annotating a personal home page with the http://schema.org/Person microformat?
If the homepage contains content about the person, then providing structured data about this person makes sense. And with the vocabulary Schema.org, the appropriate type would be
(And you should provide this structured data not only on the homepage if the person is also relevant to other pages on the site.)
As you tagged your question with privacy:
In general, using structured data can make your content more visible/prominent/accessible/popular/….
Either you want the world to know about the person (in which case using structured data can make this more effective), or you don’t (in which case you should probably not provide the content publicly in the first place).