Try not to look at carbs in terms of simple, complex sugar etc. Look at them in terms of GI. All you are really doing by adding honey to oatmeal is slightly elevating the GI of it. No, do not treat sugar as fat in your diet. They are totally different. Btw, only a certain circle of bodybuilders believe that combining fat and carbs is a bad thing. Most bodybuilders, sports nutritionist and dieticians will tell you the opposite. NEVER eat carbs without some fat. However, we are free to make our own choices and do what is right for us. Research, and decide for youself what you will do.