"I wish I worked more" - said no one ever on their death bed.
Sure, you need to find a balance, for yourself and friends and family. But where work is utterly separate from being alive I think something is broken. Just consider what dogs enjoy doing most: running after stuff and biting it. You could say, doing their job, that's what makes them fucking happy. Most animals are harder to read than dogs when it comes to happiness, but I really don't see dragging anyone "dragging their feet to work" except humans, and maybe some animals that lived too close to humans, or were caged by them.