Why dont people want to be healthy and lose weight?

In the state i live in there so many unhealthy people. I dont understand how you can't get outside and walk or ride a bike. My mom is an obese woman. She dosen't move at all she has to sit every 10 mins and needs a diet coke also. She can't swim, ride a bike, or even walk. Its sad and pathetic.
Why dont people want to be healthy and lose weight?
Post Opinion