Maslow identified seven basic human motivations that guide peoples' conduct: physical needs, safety needs, social needs, self-esteem needs, cognitive needs, aesthetic needs, and self-actualization needs.
Weight loss makes you physically better, more able, more flexible, more energetic, visibly more attractive, and more appealing to the eye.
Weight loss gives you safety in the form of stronger muscles and joints to protect your body from unnecessary injuries, aches, pains, and disease onslaught.
Weight loss improves your social life because people are drawn to physically masterful individuals, since it is unusual to meet one in your own circle of friends. Plus, human beings are naturally curious as to how you obtained your results. They want to talk with you, spend time with you, and get some answers from you - believing that maybe you can help them accomplish their personal weight loss goals, as well.
Weight loss increases self-esteem because it is empowering to your mind to know that your body can initiate desires changes at will. Having the ability to repeat positive body weight feats is both rewarding in physical and emotional terms.
Weight loss satisfies cognitive need (the necessity to have more knowledge)... because you are born with the natural need to learn new, exciting, and workable techniques that allow you to grow and prosper in positive ways. Losing weight allows you to learn, explore, discover, and create... not only a better understanding of how your own body works, but also how the world around you complements the changes you make.
Weight loss satisfies aesthetic needs - aesthetic beauty comprises the basis of human motivation. Thus "viewing" the innate or pure beauty of arts, sports well performed, and the making of a lean, attractive, or well-chiseled body can give you outstanding pleasure and satisfaction. The visual appeal of a great body cannot easily be denied or ignored. It is something that almost everyone wants.
Weight loss satisfies self-actualization needs. You have undoubtedly heard the saying, "Be All That You Can Be."
Losing weight allows you to make the most of the inherent traits, characteristics, and physical attributes you already possess, or will acquire in the near future. Via the attainment of your near-perfect body, you are also letting your true nature be revealed without hesitation or shyness.
These are effectively all very powerful entities that can only accentuate your being.
And, you can get the full spectrum simply by losing body fat and using your body weight properly.