You are ready to take it when it comes out or at least you say so.
Lets expand.
If there is a risk of you becoming seriously ill? Or perhaps a vaccine injury, which you haven't heard of?
If there is any such thing, it won't be distributed. We will know beforehand, trails are on going. There is a reason why they do these studies. The people developing the vaccine have taken these things into account, it's their job.
So far of the four leading candidates there has been no ADE response which is the worst thing that can happen with a vaccine and why they don't move to the next stage.
These front-runners are based on technologies that have been used for ages. So we know the safety profile already.
The techniques used don't use the actual live virus. They use an adenoviral vectors (2), which is a technology that had been verified by use in gene therapy as well as vaccines before.
Another one is an mRNA based vaccine, which has no virus whatsoever just a strand of the spike protein. It's also very safe and that's why they jumped into trials so quickly. The thing to notice now is the efficacy much more so than safety i.e does it actually work. Data is encouraging.
Finally the last one uses an inactivated virus, again this has been used for ages.
All these are in trials now which will involve thousands of people before being distributed to general population. Obviously the results will have zero to very mild side effects to even think about going for mass scale vaccination.
Oxford's vaccine is based on their work on MERS, China's on SARS and Ebola and that's why they moved so quickly. They had years of work already done on those vaccine. It's was just lucky we were in this situation especially in the case of Oxford. The accelerated timeline for these candidates isn't out of thin air. If it were a truly novel virus, we would have been in much deeper trouble.
This is 2020 not the 19th century that we need 10 years to see if a vaccine works. We know a lot more and we never have had this many people working on the same thing before, brilliant people. To say this should follow the usual timeline is being ignorant of how vaccine development actually works and where we are now in medical science.
1- Phases are being run in parallel. Which is not generally done. There is no harm in this, the volunteers are willing taking the vaccine.
2- Money. There is no funding issues. Which speeds the process considerably.
3- Manufacturing, again any candidate will be produced en mass worldwide, cutting time drastically.
4- Years of research on coronavirus especially as I said SARS and MERS and the advances in medical technology.
This is where we are cutting years.
Finally if you are still not convinced, let me put it this way:
If you are not sure that the vaccine is much much safer than the virus (which quite clearly is the case in general) because it might cause side effects down the line, even after all the safety measures people working on them will take, then how are you so sure that even a mild viral infection won't cause any, which has no safety protocol whatsoever? The latter surely seems like a bigger gamble.