Happiness hmm... re camera equipment:
On the film side, cost of E6 development has become a real culprit. In California I paid about $4.50 for 8x10 development at Calypso (until they dropped some of my Death Valley 8x10's on the floor). Nowadays in Stockholm the price is around 150 SEK - $20 in American currency. Ouch. I can ship film down to Germany to cost down to $8 but it's a hassle. Not happy about that. Otherwise the whole 8x10 setup I now have is excellent and I'm not sure if there is much room for improvement, at least not as long as I want to be able to carry the system in a backpack.
On the DSLR side, my Nikon system works. D700 finally allows me to use my lenses like they were intended, and all my lenses seem to outresolve the D700 sensor. The D700 opens up for new possibility with it's high ISO performance. The Nikon system has some weaknesses but it is a broad system that works. There is of course a wishlist - better glass, more pixels, better bokeh, etcetera, the stuff we discuss here day in and day out. So... moderately content if not truly happy.
Of course the latest MFDB chips make for interesting reading, but still way too much of an investment and writeoff to make sense for a landscape shooter.
In short I'd say money can indeed buy you happiness.