Hey they are calling this next generation the boomerang generation. You might not be an empty nester for long after 18. A lot of kids are going to college, racking up huge debts and no job when they are done. So you guessed it, back to the nest until they can get back on their feet. Now doesn't that cheer you up? not!!!
I must admit that I struggle with my body aches and pains too. It also isn't easy watching our parents health fail. Pace yourself and keep doing things that you enjoy. The fun things are what keep you going for the not so fun things.