Fitness nutrition: mentality

To find motivation, I read a lot of fitness tips and blogs, and I keep coming across this mentality that you need to "burn off" what you eat, especially in terms of weight loss. 

I find this idea very negative and for me it only discourages me. It makes me feel like I can just eat nothing and not train and it will equal eating and training, from a weight loss perspective. 

I like to see nutrition and training as two parallels. 

->Eating healthy to supply my body with everything it needs, keeping the intake of toxins and chemicals as low as possible and not consuming too much sugar. The sugar thing will help losing weight but to me it's more important that reducing sugar makes me feel much more energetic and less sluggish, the same goes for fats but it's hard to find a source that contains bad fat but no toxins, so as long as I stick to the no chemicals principle that sorts itself out. Alcohol counts into the toxin category. 

->Training makes me feel invincible. Weight training shapes my body and makes me look more toned and feminine: well trained glutes(bum) and pecs(chest) will actually make women look more curvy, although women with some body types need to pay attention not to do too much specific core work as this might lead to a winder waist; just activating the core during other exercises will be enough. Cardio just makes everyday life easier, walking up stairs or running to the bus becomes a breeze, and its good for the heart. Short-term, it encourages a healthy appetite and hunger, as in, you get hungry for real food and not for cupcakes and ice cream, and it also makes it easier to sleep. 

The idea that you're working out so that you can eat, or that you have to work out a lot if you eat much, will just send you running in circles and you'll tire of exercising, which should and could be the highlight of your day.