I think these images are challenging -- not at all offensive. Challenging because in my culture anyway we pretend that older folks have no sex drives and we fetishize youth to such a degree that women especially are encouraged to spend tons of money on surgery and anti-aging products so that they will retain their attractiveness.

Challenging because the only bodies we tend to see portrayed as desirable are young ones. And challenging because the aged are ridiculed way more often than they are lauded. 

I recently overheard a colleague of mine teaching a social work class on working working with the elderly and when she addressed the fact that the elderly have sex lives and that those sex lives need to be acknowledged by social workers who are working with them, I could hear from across the hall the squeamish giggles and the "eww gross" shrieks. They were profoundly uncomfortable even acknowledging that elderly folks have sex.

I've said before that i don't think we need less sex in advertising but that we need a wider range of sexuality and beauty depicted in advertising. I'd say this Virgin campaign is certainly doing that. It seems to present these couples in a way that makes it hard to laugh at them or ridicule them. They are clearly presented as happy and ordinary, not as clownish or freakish. 

...because public space really matters!

Elizabeth