Because you like Margo Channing in All About Eve
Yes, she's an "older" woman, but that just makes Mrs. Robinson sexier and more seductive. See them in The Graduate.
Jenny Flint is a devoted wife and daring crime fighter, which is pretty unconventional for a Victorian maid. See them in Doctor Who.
Roman Roy is an entitled rich boy, but he's smarter than he seems. See them in Succession.
Keren Walker is a socialite looking to avoid work, keep a constant buzz, and be as snarky as possible. See them in Will & Grace.
Daniel LaRusso is a Jersey kid in L.A. who is learning about karate and life from the mysterious Mr. Miyagi. See them in The Karate Kid.
Emily Gilmore is the DAR chair, proud grandmother, and full of opinions. See them in Gilmore Girls.
Talking to a stranger on a train is the best decision Jesse Wallace ever made. See them in Before Sunrise.
Carol Aird is driven to fight to make her life better, regardless the consequences. See them in Carol.
Anya Jenkins has a real harsh bark to go with her demonic bite. See them in Buffy the Vampire Slayer.