You've screwed up your perspective with years of dieting. Most women think they should eat far less than they do. And of course, if they're "watching calories" and eating far less, their metabolic rate slows to match. Men think they can stuff down anything and not gain, women are afraid of food and starve themselves.
However, I agree, it is a starting point. You'll need to find out where you're actually at, and work from there.