I have my reasons for justifying another camera..... wink wink. I don't usually think twice when I need something to continue doing what I love most. You need the tools in order to go further.... higher.
It brings me back to the time when I knew I needed to buy a Hasselblad camera in order to do what I wanted to do for a career. That was back in '98. I tend to look back and thank my lucky stars I did buy that 1st major camera. Now I don't think twice about buying what I need to carry on (and keep calm).
I'm one happy photographer in 2012. :-)