Why I Still Use RSS
Having only the content I want to see only be shown when I want to see it with the freedom to jump between readers as I please, all with no ads? For me, no other service comes close to the flexibility, robustness, and overall ease-of-use that RSS offers.
I would say "feeds" instead of "RSS" as they come in different flavors (RSS, Atom, JSON feed, etc.), but the use case is the same.
By the way, here are the feeds of my personnal site, and the feeds of my photography site.