The population has built in immunity to influenza. There's a combination of health risk and spread potential, and if you continue to limit the benefit to only one of the two, it's easy to distort the conversation in a way that benefits your point of view.

>Let the children build up natural immunity

If a vaccine is safer, why? Framing a covid infection as "natural" is pretty twisted. It's not like primates have been developing immunity to this strain of bat poop for millennia. Pretending a natural infection is better because its natural is reckless. I bet, and I could be wrong, most people who had chicken pox wish they had the vaccine instead.

> We don´t vaccinate young people against influenza either, because the risk is so low.

We do. You might want to read up on why the seasonal influenza is a seasonal influenza and how it is different from a new, pandemic strain. There is a reason children are ill all the time - their immune systems are naive with respect to (almost) all strains of influenza. That's also the reason the 1918 flu killed predominantly young people - it is conjectured that their immune systems hadn't seen the new strain yet, while older people had.

As of yesterday (2021-07-12), there were 563 people admitted to the hospital with Covid in the UK [1]. If 80% are young and unvaccinated (and I think the proportion is higher), that's 450 severly ill people going into hospital per day.

Doesn't sound much like the flu to me.

Even if "these young people" (makes me sound like a dinosaur, though in fact I'm in that cohort) don't care about that risk, they are wasting doctors' time, and taking resources away from overstrained health system.

So maybe I'd say: if you don't want to get vaccinated, without an overwhelming reason, then stay at home (so as not to risk infecting others) and if you do get sick, don't go to the hospital (as it was your risk you were taking).

[1]: https://coronavirus.data.gov.uk/