The simple reason why this is so popular is probably also the 'solution'. We are taught to hate ourselves and our bodies. People use their body as a wedge between where they currently are and where they want to be. Nobody wants to lose weight, I mean really, are numbers on a scale motivating? What people want when they say they want to lose weight could be many things, "I want to love my body, I want to love myself, I want to move easily through this world, I want to feel comfortable in my own skin." There are also many stories that the resolver tells, "When I lose weight then I will find the perfect relationship, When I lose weight I will feel better, When I lose weight, I will be more desirable to the opposite sex, When I lose weight people will respect me more, When I lose weight then I will be happy." Don't believe any of these and also don't believe that people care about fitting into their 'skinny jeans' or old wedding dress.
I've been involved in the struggle to find a happy relationship with food and my body (note, the two aren't even related!) for years and also helped others demystify nutrition, understand weight loss, get fit and love their bodies and after more than a decade I can sum it up in one clear sentence. "I want to feel comfortable in my own skin."
The excess weight, the lack of weight, or lack of muscle tone, colour of skin, blemishes, scars, signs of aging, stretch marks, birth marks, body hair, cellulite, pears and apples and oranges, we all just want to feel comfortable in our own skin and fortunately and unfortunately, changing ourselves begins inside out. What we show to the world and how we move about the world is a simple reflection of what is going on inside. The amount of care and love, ability to metabolize, act quickly, move through the world powerfully, be decisive, be happy, have confidence, know your worth shines through.
Think of it this way, your body is perfectly suited for the lifestyle you have today. You have the muscles you need to get your usual tasks done, you don't have muscles needed to dead lift a hundred pounds if you sit in an office all day. Make sense? For example, if you eat infrequently or not-necessarily high on the nutrients, your body might hold on to a little extra for rainy days. If you want to transform your body, start with the why. If you want to be more active, don't wait till you have 'the perfect' body, just get more active. If you want to eat healthier, do it. You don't have to be perfect, you don't have to get it all right or all done right away. It's not all or nothing.
Essentially, a resolution to lose weight is just a bad one. You probably don't even want that. Dig into what you actually want, feel how you actually want to feel and start there. Empty words are never motivating, emotional WHY's are a little more but finding the core of what it is you want might have you going in the right direction.
What other resolutions do you want to break (or have you broken)?