You could potentially be responsible for someone's death by not getting the vaccine, not just your own, but young children and babies, older people, anyone with any kind of immunocomprimising disease, people who literally can't get vaccinated because they're allergic.
The reason unis ask you to get it is because the chances of getting it are increased when you go to uni because you are surrounded by loads of new people-lots of germs mixing and then there's people like I mentioned above, who are at further risk.
You should really consider getting it, I think it's arguably quite selfish not to when you're healthy enough to get it without high risk of any particularly threatening reactions.