I admit that pretty much everything I do is for me, with the exceptions being projects taken on for friends.
As my "serious" photography is still primarily on film(mostly 6x6 transparencies and(real) B&W but also some 35mm transparencies, negatives, and B&W), my workflow involves a lot of scanning and scanning also means spot healing/cloning. I stick with the G4 for this since it's the easiest way to run my SCSI film scanner. BTW, I know Nikon Coolscans and the like are cheap now(I may be buying one from a co-worker) but the SCSI Sprintscan I have does "super slides"(3.5x3.5) which allows me to digitize a lot of family stuff.
Nice.
Because of time pressure I'm not doing any real photography right now. I still have my cameras, but I haven't had the time to pull them out. I think my dad still has his medium format stuff.