It depends.
A big difficulty is that not all students know what they 'love' at 18, and certainly don't know what they will love to study. It is worth taking the time to figure this out.
Every year, I teach students who applied to do my subject (English) because they loved it. And they are fed up because they don't love what they're doing, because they expected an English Lit degree to be something different from what it is.
With some of them, what they actually loved was thinking about what makes characters in books tick, and why some stories make us sad or happy (this is a big emphasis in school English). They might have been better doing Philosophy, Anthropology, Sociology or Psychology.
With some of them, they loved learning about different ways of living, and understanding new worlds and cultures in books. They might have been better doing History, or geography, or (again) anthropology or philosophy.
With some of them, they loved English because they enjoyed reading books and talking about their favourite books. They don't want to think about books as literature - they just want to spend time reading and saying 'I really love this bit' without thinking too much about why. And they certainly don't want to read anything that they might not enjoy immediately.
These ones make me simultaneously weary and sad. They simply didn't understand what the degree would be like, and they usually feel aggrieved that it's not fun for them. Part of the problem is the difference between school and university; part of it is the (misguided) perception that if you 'love' something like reading, you will automatically 'love' something very different, such as academic study of literature.
The same points apply for any university subject. Check how it's taught - it could be totally different from the school subject. This could also mean that something you found a bit dull at school is riveting at university. I would never have chosen to study geography at school, but university courses would be much more fun. Check that you actually understand what the course is about.
It is mind-boggling to me how many students simply do not realise that it is important to look at the courses they propose to apply for, to see what they will actually be doing. IMO, it is one of the major reasons why people are unhappy, drop out, or do badly. For students who got good A Levels, it is probably the major reason.
And obviously, one surefire way to mess up your chances of getting a good job after university, is to fail to get your degree, or to get a rotten degree.