The bad part is when people just won't get an injection, even though that's what's best for them.
My husband got a terrible ear infection, and I finally bullied him into going to the ER (on New Year's Eve, no less) and the doctor diagnosed him with otitis media and said he needed a round of antibiotics, and wanted to get him kick-started with an injection. He absolutely refused.
As a result, he started with a pill and stayed sick longer. I really fussed at him about it, since the injection would have been in the backside and he never would have even seen the needle, but he was just intent on being stubborn. I hate needles too, but doggone it, sometimes, an injection is necessary! I told him the next time the doctor wanted to give him a shot, he was getting one -- period.