Societal norms conflicting with personal preferences

I chose this preview for Something's Gotta Give because iniately it reflects, albeit in a less exaggerated way, Humbert's preference for younger woman. There are obvious differences in their preferences for women; Jack Nicholson's character desires woman who are in their prime despite his old age whereas Humbert desires young girls with sexual charm. Either way they aren't in keeping with societal views. Since I had to read a summary of the movie to learn what happens in the end (spoiler alert) I will share that Jack Nicholson's character eventually realizes his immature sexual desires are standing between him and a truly fulfilling relationship. He marries a cohort and the result is a cliche Hollywood happy ending. Hubert, however, has suffered through a forced and unsuccessful marriage. His fate is very much sealed and he will not find solace in societal norms. He truly craves young girls and this curse is unlikely to end in such a happy ending. The comic way in which Jack Nicholson meets his future partner couldn't be more different from the emotional struggle Humbert endures as he tries to satisfy his needs.

Starlets like Miley Cyrus regularly conflict with societal norms and attract sexual attention. Considering this trend, why don't older women try the same thing?