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You'll find thousands of quantity surveyors, radiologists, retail managers, cleaners, etc who are entirely dispassionate about what they do for a living yet they still do brilliant work because they do it for the money rather than the love. And that's perfectly alright. //
We're not talking about taking a job here, we're talking about choosing a subject for further education, for an undergrad degree. I went to pains to say that passion wasn't a requirement, not even for taking a Uni course; but I'm going to assume passionate engagement with a subject is a top reason for taking a Uni course and that those who do a course not solely because of an anticipated job are more likely to complete. No stats for that sorry.
If you're just wanting a job in IT purely to have a job then why bother with university?
I know 2 cleaners - one does it for work, solely to get money to live; the other is passionate about it and chooses to do it in preference to other things (she's a qualified teacher!). Neither of them chose to spend 3 years of their life studying it though. Also if you're choosing a Uni course based on expected earnings levels of graduates of that course then you need to factor in the necessity of completion of the course, wouldn't it be far more sensible then to do something you have even a little experience in? If you've got the maths grades to get on a CompSci course then you're better surely with sticking with maths or economics and targeting the expected earnings of an accountant or actuary, ForEx trader or something?
>"entirely dispassionate about what they do for a living yet they still do brilliant work" //
Brilliant? Like they win awards for their work, they've been promoted to the tops of their fields? Brilliant. I can believe "good enough", even "better than average" quite easily.
[I'm not motivated by money, so I do find it hard to believe that people would devote their life to something _on_purpose_ that they have no passion towards.]