I have a client who is obsessed with what he weighs, so much so that his mood du jour is determined by whether the number on his scale goes up or down. This is no way to live, nor is it an accurate report of the health of your body, i.e., how much of your body is fat vs. how much of your body is muscle mass.
Excess body fat is undesirable for more reasons than simple aesthetics. Fat is a storage site for carcinogens, and the more fat you carry above a healthy range, the more you risk hormonal imbalances which set you up for many diseases including diabetes, metabolic syndrome, heart disease, or cancer of the breast, cervix, colon, esophagus, ovaries, and prostate, to name a few.
A recent study by the American Cancer Society found that approximately 90,000 cancer deaths every year are due to excess body fat. I advise my clients to worry less about what they weigh and concern themselves more with what comprises their weight. In other words, focus on body composition, or the percentage of fat relative to the percentage of muscle on your frame.