SNIS-106 - I love you, Grandpa! My body is all yours

The sex between an old man and a young woman is very erotic and good, but the main elderly actor can't get an erection, so they end up using a middle-aged man in old-man makeup or a young guy, and the sex happens with them instead... Couldn't they have found a way to make it work without bringing in a young man? If you watch this expecting sex with an old man, you'll be disappointed.

It's a senior-themed work, so why bring in younger people (middle-aged)? It was at least okay because there was a 3P with an old man, though...