Study after study now shows the dramatic impact that moderate physical activity has on your health. It reduces heart attacks and strokes, improves cognitive function and memory, alleviates depression, prevents and reduces the consequences of diabetes, etc. The flip side is that lack of exercise increases your risk for osteoporosis and dementia. Bad things happen to people who don't move!
So folks, what are you waiting for? If you don't like gyms, find a hobby that requires physical exertion. Take steps, park far away from your destination, mow the lawn, wash the car, wash it again, whatever you do just keep moving. Get up, get out, and live the one life you have to the fullest.