The obvious good reason is you have one of the many pre-existing conditions that prevent you from getting the vaccine without causing yourself further risk of long term organ damage/failure caused by you previously taking other mandatory vaccines on a regular basis (healthcare workers, vasculitis is one such group of diseases common among the RN population - but what do they know, those front line workers with their anti-vaxx mumbo-jumbo).
The other obvious reason is another simple one - it seems its completely unnecessary for any relatively "healthy" person such as myself to worry about this virus. Our immune systems are designed for this battle, and based on the death rates, it seems despite the US population being very obese and largely unhealthy with a fairly high diabetes rate, we're somehow not dying in droves.
Third reason, vaccinations against every single little virus that comes along is effectively practicing negative selection. I think we all can assume where that leads especially with a leaky vaccine like this one - large scale true extinction event. We're breeding superbugs by vaccinating large scale populations, instead of small targeted vaccine administration.