The homepage is more of a hub for all the site’s content, while the Blog and Portfolio pages allow you to get more specific.
My old design had a more static front page, and all I heard were complaints that it didn’t allow users to get right at the content. I feel like this new design sort of inspires exploration by providing a taste of the content right away.
I also used to have a “Work” page instead of an “About” page, and I had an “About” sidebar on every page. Some people told me that it was distracting for anyone who already knows who I am. And while the “Work” page was dedicated to what I offer professionally, it never really accomplished its goal. I’ll probably update the “About” page soon with more info on what I do.