Pathfinder isn't 4e to me, it's Service Pack 2 for 3e, if you'll forgive an OS analogy. 3.5e was Service Pack 1. Pathfinder is just another (needed, IMO) collection of fixes, updates, and revisions to ensure the usability and (relative) stability of the core.
It won't truly be its own game until Pathfinder 2.0, but it is possible to run an all-Pathfinder game right now. (Personally, I'm almost to the point of banning all WotC releases, restricting things to Paizo, Malhavoc, and OtherWorld Creations (the Genius Guides group.))
It won't truly be its own game until Pathfinder 2.0, but it is possible to run an all-Pathfinder game right now. (Personally, I'm almost to the point of banning all WotC releases, restricting things to Paizo, Malhavoc, and OtherWorld Creations (the Genius Guides group.))