I'll explain like y'all are FOUR since some of you are dense af.
You get a vaccine, you're conferred immunity. You now have greater protection from getting infected should you become exposed. Curtailing infection = you won't have any infected cells spawning new infectious virus particles to shed all over the people around you. Whether you have symptoms or not, you're still shedding that shit everywhere.
You're healthy and not at risk of dying should you become infected? That is fantastic; lucky you man. So then why in the hell would you think the government and pharma and the entire world are working their asses off on a vaccine to... protect you from the fucking sniffles?
No one gives a shit about your potential Covid experience, they give a shit that your anti-vaxxer ass might come in contact with an asymptomatic anti-vaxxer ass and then you go on spreading it while you're out partying in Florida or dining all over the place.
If everyone else is a decent human being and vaccinated (that good good herd immunity you all know nothing about yet bring up any chance you get), it won't be so bad. But you get problems when you mix vaccine skeptics, unprotected groups of people who can't get vaccinated and uncertainty about duration of immunity and reinfection.
As others pointed out, protesting about putting the unknown into your precious bodies is bullshit. It's been proven that just 1 drink a day, or 7 drinks in a week, increases your risk of earlier death (in the range of 6 months) yet so many assholes are bitching about not being able to go and get blackout because of a pandemic that they have no interest in helping stop. Y'all need to take a look at yourselves in the mirror.