I understand the hesitant. My wife is one, she was born with one kidney so she is wary of anything that could do damage. I was for a while but got the jab.
History is full of approved drugs that later get pulled from the market. Thalidomide comes to mind off the top. And these are drugs that went through the full approval process. These vaccines, although "approved" have had the long term studies deferred. They will not be complete for a few more years. We are the lab rats.