You are describing me exactly, except that I have had a Bronica, Mamiya twin lens reflex, the RB67, the RZ67 Graflex, Sinar 4x5 and now the 645 AFD and PhaseOne. I also have the Nikon D300 that is, in my opinion, a very matured generation of Nikons and has the benefits of DX (smaller lenses) and a very nice 12MP file.
So, why going back to film? I want to take this 500c/m to Nicaragua and do some landscape, documentary and portrait in MF while not worrying about the cost of my work sytem, or if the batteries are charged. Also the Hasselblad has a waist level finder, film advance is human powered, so the camera ends up being very small and compact.
I could aim for two application: fine art work and images for my stock library at Alamy. In other words, there is more than sufficient justification for the $601.50 invested (I will probably end up spending more when I fall in love with things like Carl Z. glass...
My first MF is H3DII-39, but i saw and held this camera 50x CM in the store where i bought my H3D, it looks sexy and great, i feel i want to buy one, even i asked about film MF and my eyes on this one, but really not sure what will this film add to me more than what i have, it is a desire more than the need.