This is another one of those threads where the answer is totally ambigious and depends on what you want to accomplish at a certain time.
You might as well have asked what the best form of transportation is. I can tell you then that if i plan to travel long distance, I'll take the plane, train or car. If i want to travel a few kilometers, I'll just grab public transportation. I want to get in better shape or not pay anything, I'll run or take my rollerskates/bike. If i hate getting wet, I'll pick the car when it's raining etc. etc.
You might as well have asked what the best form of transportation is. I can tell you then that if i plan to travel long distance, I'll take the plane, train or car. If i want to travel a few kilometers, I'll just grab public transportation. I want to get in better shape or not pay anything, I'll run or take my rollerskates/bike. If i hate getting wet, I'll pick the car when it's raining etc. etc.