Early 50s here....We are friends with a couple in their late 60s. Good friends, just good friends. We've been in our hot tub and theirs topless and sometimes naked. They are a gooooood looking couple despite their age. His wife has saggy but still very sexy tits, she looks great naked. He is in shape and has a big tool, we've seen him full hard getting out of the hot tub. From our tasteful conversations in our hot tub they have a good sex life.