Maya,
Thanks for your detailed answer. It really helped me understand your thought processes. FWIW my wrists were only just under the 6".
The genetic argument is a big one for me too, My Mum was about 105 pounds (at 5"3) when she fell pregnant with me and while that was partly the result of travel ling overland through Asia (she and Dad did the 70's Aussie overseas thing) She maintained a weight of around 110 or so when she was in her 30's and had 3 kids (ie like me) She was (and is) active, and ate healthily and normally and I never recall her dieting, as such. Her sister is and father was even leaner.
I see where you are coming from with the frame argument, but it still seems to me that when it comes to determining weight then how your ribs (or hips for that matter are arranged must make a difference. Wouldn't you need more body to filll them out?
Katja agree that BMI is a good starting point if you are overweight. (And I believe that there are health benefits to say, reducing your weight by 10% if you are obese, even if that doesn't get you officially into the healthy weight range). And I am exactly in the position of working out what, in the range, would be healthy for me
That article you linked to was really helpful. I decided to test my body fat percentage ( I have one of those Tanita scales that measure it, but I hadn't done it for literally 7 years!) I think there are some question marks over their accuracy, but perhaps it is okay to use them for comparative purposes over time) I was 24%, btw.
Thanks again for your detailed replies
PS I like skinny guys too. My DH was only 64kg (141lb) at 6'1 when I started going out with me at 21. At our wedding (after 8 months in Japan) he weighed 127 -prompting numerous comments. He is about 163 now, aged mid 30's. I don't think he'll ever get big all over - the danger will be that he will be a skinny guy with a big tummy!