If you liked 3e enough that you're not going to switch... why would you switch to Pathfinder? Maybe it's closer to 3e (debatable, considering the breadth of the changes), but switching will still require work and you presumably already have a game going that runs fine. And it doesn't seem like the difficult issues with 3e (like high-level play being rather tedious) are being dealt with, so why bother?
This is where I'm coming from.
I love 4e, and it's working great for my group, but I acknowledge that it may eventually fall flat. The bloom may fall off the rose. I also may end up getting burned out on 4e, and in turn get un-burned-out on 3e. It was my system of choice for 8 years, after all - I loved it, despite the fact that parts of it annoyed me.
Pathfinder just confuses me. The stuff that really concerned me (as a DM) about 3.5 isn't being addressed. This includes magic item trees, extensive NPC design, gruesome spell look-up times, common adjustments to ability scores, and difficult modification of monsters. Stuff that I thought worked okay, or never really thought about, is being changed unnecessarily. (Races, classes, Cleave, etc.)
I found it cumbersome to use 3.0 material when I switched to 3.5, and it looks to me like conversion will be just as burdensome or moreso were I to use Pathfinder. (Doable, absolutely. But that's a little more DM prep time I'd rather spend doing other stuff, like adventure design.)
-O