You may never learn the names of any of the people you talk to in a dog park even after many many hours spent there with them and many hours of conversation. But if - knock on wood - anything should ever happen to your dog these nameless non-strangers will rally sympathize offer to help and hold your hand. I know this from experience.
At the end of your life you will never regret not having passed one more test not winning one more verdict or not closing one more deal. You will regret time not spent with a husband a friend a child or a parent.