I think a lot of us on the Lounge (as in life) got into vintage through the various youth cults of the 80's. Fast forward and a most of us are now in our 40's and still like to 'dress up'. I wore a lot of vintage when I was a teenager in the 80's mainly because it was cheap, available, unusual and easy to mix and match. It was only as I got older that I really appreciated the history behind the looks.
Dita is nearly 40 now, but I know what you mean about some of it (the pin up looks) being geared towards a slightly younger age range. I think a lot of the loungers blog though, and as Lizzie has said, we err towards the more 'mature'!