Look in any gym and count cardio machines. You’ll see more treadmills than anything else.
Ironic, since running and walking are the simplest of physical activities — the things for which you least need equipment. I know there are rational-sounding reasons to use a treadmill. But for most guys in most situations, outdoors is better exercise, no more injury-threatening, better for your well-being, and more sustaining of long-term fitness.
Let’s assess the validity of each “treadmill reason,” and also look at “treadmill drawbacks.” I hope this motivates to choose outdoors more often, man!