Anyway - strength goals need to be balanced and should be a lifelong endeavor that ultimately adds quality and years to your life. Someone once said that "strong people are harder to kill" and I'd have to agree. I'm not sure if it's physical or mental strength that's the key, but I feel that the pursuit of physical strength will give you mental strength as well.
Longevity is one of the reasons to make sure that you have balanced and well thought out strength goals. If you practice Yoga and can do the "Flying Camel with Hemorrhoids" pose (but can't do a strict push-up), or if you can run the "Dirty Death Race 2016" but you can't do a single pull-up or touch your toes - I think you've got a problem!
Are you working on getting strong while remaining "agile, mobile and hostile"? Thinking of getting strong as being part of a long-term goal to enjoy life to its fullest should be an integral part of the athlete's planning process... not a sermon, just a thought!