I don't advocate throwing the scales away, but you do need to pay attention for at least a while to what and when you are eating so you can gauge if you are doing as you want. I agree that you shouldn't allow the scales to dictate, and weigh only occasionally, but far more important is to keep track of your food for a while. Unlike lots of younger guys, I do have to pay attention to calories, as do many women; but if you are eating true to the Primal Body principles, you should be fine. If you find the waist band on your trousers feeling snug, then cut back a bit on fruit or snacks, or excess carbs. I like Livestrong.com to track, others use fitday, and more are out there. It is data from which you can make decisions on how to adjust your diet.
I was a sugarbaby; meaning since I was born I was given lots of sugar, and ate lots of processed foods, especially sweets until I was into my thirties. Most people in the west were/are sugarbabies.
“How does today’s youngster educate his sense of taste? By submerging it in a sea of sugar from the time he gets up to the time he goes to bed.” W. Root and Richard DeRochemont, Eating in America (1976)