It's funny you mention this...
I was talking to my wife last night about something like this. I told her she will have to bear with me for some time, because I will be spending more time with my photography. There are a myriad of reasons (some of which Seb and me have discussed through email, but does not really have anyhting to do with this subject).
One of the reasons, though, was that I feel really "focused" right now (I used that same exact word last night). What this means to me is that I'm "seeing" things well, getting good composition, and I'm becoming more dedicated to either getting up early or staying at a place late to catch the good light.
I'm have also been more focused on learning more about exposure and tonal contrast, which the D70 has certainly been a great tool to learn on because of the instant results.
In short, I'm gaining more confidence in myself and thus I am more focused on learning the craft.
Great post Seb,