While out shooting, I had an M3 with me. I just like the size and how quiet it is. In public settings you are not 'that' guy w the big camera and bazooka lens. I passed a gentleman using an Olympus OM1 - and man it was the SLR equivalence of the Leica. Beautiful, small, discrete.
I've had small Pentax SLRs, and liked them, but not enough to keep them. Just my deal, nothing against the cameras. But it made me think, what is "enough" camera for you as a daily carry to have fun with, without you feeling limited? As in, you don't want to think 'if only I had my..'
It's making me think as to why I'm keeping my Nikon Fs.. awesome cameras but I really don't use them as they are in the middle - too big for 'fun' - too small for serious (AF, motor drive etc like with the F4 and F6).
I guess its part of the paring down of gear that is being used, not collected.