For me, I really like getting out for a walk but don't care for running at all. It's not a matter of sweating--if there were walking/hiking available that involved some climbing convenient I'd do that. But just don't enjoy running and it falls into the category of maybe tomorrow.

Agreed, sweating and needing to take a shower afterward is annoying, and I also tend to push myself to near limit when running so I'm just completely out of breath the entire time and miserable. And my knees get pretty annoyed with me if I do it too often or for too much at a time.

Weighted or incline walking is a great compromise to increase effort, but I do enough strenuous activity with weight training that I would rather take it easy and enjoy the walk instead most of the time.

I do also run occasionally when the weather is nice. My cardio of choice is bicycling, which I do twice a week either for 1.5 hours on a trainer or 40 miles (~2.5 hours) outdoors.

I used to run a lot more, but I never actually enjoyed it. I just forced myself to do it to burn calories. Walking I enjoy much more, so I do that more now instead.