It is the second most used vaccine in the world after Pfizer. 71 countries are using it. It is also being provided at cost, a tenth the price of the other vaccines. Since the Brits started using it their seven daily moving average of new cases has gone from 67,000 to 5400.
In the UK 30 out of 18,000,000 people died. That's 1 in 600,000. The chances of dying from a car accident (in Canada, in a given year) is 1 in ~2800. The chances of dying from COVID are 1 in 1000 (roughly depending on age).
I would take the vaccine, but I'm not 55 unfortunately.