Demonization of “fat” in foods

Yeah, this is the worst. When someone asks for dieting advice, I recommend high fat and high fiber, because both will help you feel fuller on the same amount of calories.

Hyper processed foods being cheaper than whole foods

I don't think that's actually true. It does seem to be true for restaurants and packaged foods, but cooking is almost always cheaper than buying the equivalent product in a highly processed form. The problem is that people seem to want easy, fast solutions, and buying something is easier than cooking.

Which gets into...

Sedentary lifestyle…

This is the real killer. We seem to put way too much emphasis on sedentary activities and time saving instead of doing the things that our bodies were designed for. We drive to work to sit on a chair, and then we eat already prepared food in front of a TV or desk to play games or watch something. There's almost no walking anymore, much less running.

Consider replacing sedentary activities with enjoyable, active ones, such as:

• cycling instead of driving to do errands - maybe work is too far, but most live within a couple miles of a grocery store, library, or some other destination
• instead of watching TV, consider listening to an audiobook while walking/jogging/working out
• consider a standing desk for work/play; at the very least, get one that's configurable so you can alternate