I also eat better when I exercise. It does make me hungier, but then more likely to make better choices. After a walk/jog a salad sounds much better than say chocolate or something greesy. So, I dont feel like its a chore to choose the salad (or something healthy) over the slice a pizza!
I've been on ww before, and I do start ww with a regular exercise routine together. Actually, I look forward to the exercise but not having to control what I eat! In fact, knowing I will be getting back to weight loss after having the baby, I'm excited about exercising, but not too thrilled about cutting back on sweets and portion sizes. There have been times in my life where I kept up a daily exercise routine, but slacked off on ww a bit (basically fell off the wagon). And keeping with exercising helps me get through the weak times when I over eat or go off points. ANd get back on track quickly and easily.
Also, exercise helps me feel better all around. I have more energy, including um, in the bed room, which my husband likes!
I notice a complete change in my mood, I'm happier, and more motivated to continue my weight loss, and it does in my case help the scale move down a faster. Also with (almost) 2 kids, its my me time. Exercise clears my mind and when I'm done, even on days when I absolutely do NOT feel like exercising, I feel GREAT! And never regret it.