One of the stupidest feel-good sayings ever is “age is just a number”. Yes. It is a number. It is the number of years you have been alive on the planet. and the more years, the more life experience and wisdom you should have, and you should act according to that experience. So dating someone far younger than you is not smart because you are on different levels of life. Their brain hasn’t been affected by the trials of life yet.
Now, once the younger party is in their 20’s, then whatever, free for all, go ahead and date a hundred year old.
But it’s kinda squicky when someone in their late 20’s dates a teenager. Like think about it. 4 years ago the older person was basically the same, just slightly younger. The younger person was STILL IN GRADE SCHOOL.