@Maarten Bauer@Rabbival507
I was kind of in a similar position when I finished high school 8 years ago. I went into software engineering at first because it didn't occur to me at the time that music was something I'd be able to pursue really seriously. Even as I started hating software engineering, and realising that I really needed music in my life, I still worried that music wasn't something I could do as a 'job', and that IT would be safer even if I hated it. But then I hated it so much, and was so miserable, that I decided that I would switch to music and just take my chances. This was after 3 years of uni. I then had a 4 year music degree (in percussion performance) which I loved almost every second of. It was at a university rather than a conservatoire, which I think was better for my own development.
Then during the music degree I gradually realised that what I actually really wanted to do was to write music. The composition tutor at my uni recommended I finish my degree in performance rather than switch to composition, so I stuck out in performance and I'm glad I did. A chance visit to London two years ago gave me the inspiration to audition for a masters degree in composition at various places in the UK, and my backup plan was a masters degree in performance at the Sydney Con (I didn't want to do composition there). I got accepted in Sydney and was about to start class when I got the offer from the RCS in Glasgow, and there was not a moment's hesitation before I accepted it.
So I guess if I have any advice, it'd be to feel free to start a degree in something other than music, but remember that it's never too late to change your mind.
So the reason I write music is that I can't imagine doing anything else. Even if I had stayed in IT (and would by now be working in some sort of desk job), I would still be composing in my spare time. It made sense to me that I should therefore try and study it to get better at it.