The Paradox of Exercise

The new target in my life is to lose weight and get to my “ideal weight” levels.
I realized that the biggest hindrance to that is the comfort levels that we live with.
What I mean is.. I travel to work in a car, go to my office in an elevator, at the airports we use escalators and travelators.. the list goes on.. right to the level where we have remote controls to adjust TVs, fans and lights..
Over the years, man has designed these machines / gadgets to make himself lazy.. and now that he has started feeling unhealthy (read as fat in my case), he tends to find other machines like the treadmill, cross country trainer etc to get back in shape..
I think there is some sense in doing what our ancestors did.. use the natural ways to exercise.
Its much healthier to walk on the road (may be on a beach) rather than on a treadmill.
What say ?