I've always seen the same pattern in College decision: self-projection. That is, a combination of what they know and what they think they can do/like . Most people choosing Uni choose from what they know. Majority of young people know little about anything CS or nerdy; They often know the end product (computers, phones, apps) but very little about the people working on it. Compare that to doctors, managers, Wallstree…
I was guilty of that but I don't think I was wrong to think that way.
I decided to work in Computing when I was 10 and would like to think that I'm quite good at it, but felt that I'm not good enough at doing essay style exams to be able to pass a CS degree.