Goldens have boundless energy and stamina bred into their DNA. Initially, this gave the breed the ability to tread miles without rest as hunting companions. Today's goldens are much less likely to hunt, but that puppy energy stays in play until the dog is well into adulthood.
If you're looking for a dog with which to play and romp, the golden is for you. However, they should be monitored with small children, as their exuberance can possibly cause accidents.