Why do you always run in the gym instead of outdoors?

The air in Johnson County has received a grade of "D" from the American Lung Association, the river crawls with mosquitoes to the extent that one feels like one is running through a sandstorm, and one has to stop and start frequently waiting for passing cars to go by and that is bad for the legs, specifically developing the "bone groove" beneficial even into old age. One could argue that speed slows down time when one run's outside relative to the movement of the earth and it's inhabitants based on quantum physical interactions, but this effect is negligible, and there is no place to put your water bottle, and that is annoying.