Doctors should not be younger than I am. Doctors, from what I know of them from 1990s television, spend approximately 25 years in school, and then an additional 56 years as residents. They spend years and years falling in love with one another, having sex in closets, developing tragic friendships with people who are dying, and fighting off knife-wielding attackers in the emergency room before they become actual doctors. So the fact that every specialist I see looks at me appraisingly from eyes that never appraised the 1980s is upsetting and wrong and generally unacceptable.
Newscasters should not be younger than I am. Sure, the ones who look a little bit like high-class prostitutes or rich men's mistresses - they can be youthful (in that soon-to-overripe kind of way). But the ones who've cut their call-girl hair and developed those immovable hair hats should not be younger than I am. They are supposed to give the impression of gravely delivering grave news they don't fully understand because they're newscasters, not journalists, god dammit, and they're supposed to do so using lips that existed prior to the year 1990.
3) Mothers in telephone/internet provider commercials
Actresses playing mothers in telephone/ internet provider commercials should not be younger than I am. You know the ones I mean - they're often ethically ambiguous, not actively attractive, but not noticeably unattractive, and they are enviable because they are lucky enough to have husbands who don't know how to use the television remote and children who have attitudes and inappropriate boyfriends. They look both despairing ("That's a remote, you darling, hapless man!") and smug ("I have a husband, children and a television, you darling, hapless spinster!"), and as of a couple of years ago, they started looking about ten years younger than I am.
Thank God I'm not a successful professional or a contented family woman, or I'd be surrounded by such upstarts all the time.