I mainly didnt do medical science because I decided not to try and go for medicine again. My ATAR and UMAT were nowhere near good enough to get into med and I realise that last year I put in my best effort. So realistically, my chances of making medicine via medical science are extremely low (the competition is crazy intense).
Overall, if you have some interest in law you will enjoy it. Law is now becoming a much more general degree, with around 40% of graduates never becoming practicing lawyers (many law/commerce graduates do law just to boost their employment prospects in the business field). So it is a really useful degree if you want to work in business (it works really well with majors such as management, economics, finance etc)