> The disease can and does have severe and sometimes long-lasting impacts on young healthy people.
The context that we were discussing was "achieved herd immunity, epidemic goes away". In that context the healthy young people do not get any severe and long-lasting impacts, because they don't get the disease at all, thanks to the herd immunity provided by mass vaccinations.
> And we aren't getting to a herd immunity level of vaccination if young people are unvaccinated.
This is true. If you were to say "it's your responsibility to take a vaccine, even though the risk/reward ratio is bad", then that would be an argument that I would respect. However, that's not the argument you're making. You're trying to claim that the risk/reward ratio from a personal standpoint is good, which I disagree with.
> The mRNA vaccines don't have any impact worse than a sore arm.
This is false. I personally know people who have had considerable side effects from the vaccine ("getting sick").
That said, I'm personally taking the vaccine today.