A new set of kids at 81 YO ! WOW, you really know how to have fun. But you know they're what's keeping you young. If you can handle a 42 ft. boat at 81, so can I some day (I hope).Yes, they have become my kids since most have been with me for many years, several since pre-school and are now in high school.
But good on you for stepping in. We had our kids in out very early twenties and that was great. Any later than that and I'd have cracked.