“You continuously underestimate and minimize the dangerousness of this virus.”
No I would prefer that the entire population strengthen base level immunity against all viruses.
My aunt died of a common cold at about age 90. Probably a coronavirus given the time of year, but who knows. Nobody bothered to test her vitamin D blood levels for decades. Nobody gave her vitamin A, vitamin C, B complex, zinc, iodine. She died of insufficient immunity.
The thymus gland is like the infantry training school for your immune system. It's where immature immune cells go to learn how to kill the enemies that the body encounters every day. As you get older, it atrophies and gradually loses the ability to develop new soldiers for new/emerging threats.
That's what makes Covid so deadly to the elderly population. Their infantry training school remembers how to fight all the old enemies but it's slow to develop the soldiers needed to fight new or "novel" enemies like "the novel coronavirus". This is also why vaccines are less effective for elderly people than for young people.
The thing about Covid though is that it is a highly adaptable enemy due to it's rate of mutation. It exists for no other reason than to make copies of itself. It will do whatever it takes to keep copying itself. So if we are successful at vaccinating all the elderly people and making them 100% immune to it, it's just going to start infecting younger and younger hosts. Killing them isn't it's ultimate goal though, making copies of itself is it's only purpose.