No, my post is not all over the place. You're just not very good at reading. Effect on joints was the OP's point 1. Effect on fitness was point 3. Must I address those points in separate replies, even though they were made in one? That's absurd. Also, they're not completely unrelated and I've even drawn the lines between them. Talk of running's negatives should be balanced by consideration of its positives. Even if running is harmful to the joints, and already cited evidence suggests otherwise, that might still be outweighed by the aerobic benefits. More people die of heart attacks than of sore knees. I don't think it's unreasonable to counter unremittingly negative commentary with some mention of positives.

Next time, try reading what others write, instead of cherry-picking one piece out of context to address in support of your biases.