@MercyBooth,
Normal family life has always been decided by our ability to look after people. If you want an NHS, then NHS beds could be the limiting factor.
What a lot of people (like you) fail to realise is that when risk to lives exceeds a certain threshold, people lock themselves down anyway if they can afford to (exodus of the rich to country homes during the Black Death??).
What do you want to happen? Oxygen running out? People gasping to death in tents, untreated (save for morphine, hopefully)?
It looks like we should be introducing distancing and mask wearing measures sooner rather than later, and then maybe we could avoid a lockdown.
And we should vaccinate teens (and younger children) as soon as possible. They take it home and give it to older parents and grandparents, some of whom end up hospitalised.