Relative to what? What is your definition of good health and where are you starting to see yourself breaking down?
I agree that as a runner we are not always training for "best health" and I think that if I were a well-rounded athlete, I would certainly be healthier.
Option #1 - Old runner, getting slower every year. Always worrying about weight. Not very strong. Skinny-fat. Super sore. Bad balance. Super inflexible. Tendons, ankles, back, knees... Plantar fasciitis, NEVER takes a day off running, etc.
Option #2 - Older multi-sport athlete swims when his body needs a break. Rides a bike for zero pounding. Lifts weights as part of training. Alternates sports when things are starting to hurt. Does yoga twice a week. Uses ERG (rowing machine) to add strength. Doesn't mind adding a couple pounds of muscle. Considers a long hike an acceptable workout even though it is not "a run."
I ask myself sometime why I choose option #1. But yes, I am all in on #1.