Honest question, because I don't understand why you seem to think that these people don't ask the same questions you do.

Determining whether a vaccine is more or less dangerous than the virus it's supposed to protect against is literally the reason they have long-ass trials before they go to market. It's not to check if people like the name or the taste, ffs.

For a very small subset of people, the vaccine might cause more complications than the virus, but for the overwhelming majority of people it's a no-brainer to get inoculated. Especially because it also helps that small subset of people that can't be inoculated because they're likely to experience bad side-effects.