I lost my Photoshop when I upgraded computers and the change in OS. I used an older version for years and years. I changed from Mac OS 9.2 to OS X and that meant my Photoshop was no longer usable.
I've been sort of trying to find a replacement for it since, though I want freeware or shareware. I think GIMP will end up filling the bill--open source freeware. The couple of others I've tried just haven't done it for me.
So I do little processing, just what the Kodak software allows for. That's enough for most of what I want to do at this point, anyway.