We all do our seat belts when we get in the car (well, we should all be doing this) because we know that seat belts keep us safe. Why don't we think of vaccines as a similar situation then? Here are a few reasons why we should view vaccines as a safety measure no matter what.
1. Immunization save lives
According to a research report titled Vaccination greatly reduces disease, disability, death and inequity worldwide, about 6 million lives are saved annually around the world through vaccines. (https://www.who.int/bulletin/volumes/86/2/07-040089/en/)
2. Getting a vaccine decreases the risks of making somebody else sick
When you get vaccinated, you are not only keeping your self healthy, but you are preventing the disease from spreading to those around you.
3. Vaccines keep us healthy
According to the National Foundation for Infectious Disease,
"The Centers for Disease Control and Prevention (CDC) recommends vaccinations throughout your life to protect against many infections. When you skip vaccines, you leave yourself vulnerable to illnesses such as shingles, pneumococcal disease, influenza, and HPV and hepatitis B, both leading causes of cancer."
4. It is better to have some type of prevention than none
Let's say you are living in a ghetto apartment. You will lock the doors and try to keep the windows shut so that you don't get killed or robbed. Well, not getting vaccinated is like opening the door and windows wide open for those deadly strangers to either kill you or rob you.
5. Diseases DO NOT disappear
Despite the fact the United States has a low disease rate, it is a totally different story for other countries. There are still some countries that are trying to combat polio even though it is almost eradicated. In result, do not be so sure that you will not get infected because not getting vaccinated means that you are allowing these deadly strangers entering into your body.
I agree with what you said. i think the reason for a lot of anti-vaxxers is the pseudoscience that vaccination causes autism. Because of a study conducted by a scientist, who was later discredited due to his false research, the media started spreading the conspi theory that vaccinations are bad for you. But luckily, people are starting to realize that those theories are completely false and trying to convince anti-vaxxers to vaccinate their children so no epidemics would break out on a global scale.
While I agree with the general premise of your analogy that the safety of a seatbelt from a potentially deadly car crash is similar to the safety of a vaccination from a potentially deadly disease, I do think we also need to consider that there exist minorities who simply cannot afford, or cannot literally (their bodies are allergic or too weak) take vaccinations. So while the logic seems obvious to us, perspective really matters.
The common concepts in the safety precautions in car and vaccination against potential diseases facilitate the understanding of what vaccines are for. I especially agree to your point that doing something is better than doing nothing. There is no significant harm for having vaccines to prevent death from deadly diseases and to guarantee more healthy lives!