I was about 50, he was about 70. We met in a gay sauna, he made the move and we went into a private room to have fun.
The skin on his arms was rough and dry, but the rest of his body was ok. His bum was flabby, and he could not get hard. I felt he offered his body to me in exchange for some intimacy. I did what I could to make him feel needed and in the end, he was quite willing to let me finish inside him. I offered to help him get off - I was happily playing with his flaccid 6" before that and I wanted to see how much he would grow. He sort of smiled and said it takes him a long time to get hard, so it was not something he wanted.
I got my rocks off, and he seemed to be satisfied with that encounter. I suppose everyone went home contented.