Without Covid, over half of everyone who dies, every day/week/month and year are over 75 and half of them are over 90. Old people die all the time, it’s just what happens.
Ok. Without being dismissive, you are showing all the signs of being a young adult, with a young adult outlook, driven by a young adult brain. It's itching to get ON WITH IT. Get social, get relationships, fuck.
It fears self-absorption.
It's not ready to sit and rethink things. That is supposed to come a little later.
Life will go back to something close to the way it was, there will be more than enough opportunity for young people to buck the rules, take chances, socialise, mix, create new, lasting social groups that take them forward. It's going to be a few more months til then.
It'd be wrong not to dash your hopes - these arguments will not hold enough sway. It's painful to watch people suffer, in dealing with key developmental stages being affected by outside circumstances, being delayed, or brought forward... but it IS something, that once it's over, you won't likely be troubled by much in the future. The best advice is to adapt for the short term: Don't sit around and think about this stuff. Use your time to learn, improve skills and create. Get out and about on your own, if neccessary. Socialise creatively.
It's not forever. It's a few months. Now please consider that if I say I personally wish you would find a way to show a bit more respect to the right of other groups to survive and thrive. None of this was guaranteed, there are young adults who will through the fates of biology and other factors
never get the opportunity to thrive and live as fully as you do. And the older adults, who pass through that stage, they don't want to die just because the economy shrinks and they have to stay at home. They want, they need, to look at the grandparents. And the young kids need their grandparents too. Maybe not in the same way as you need to get out into the world and make it happen for yourself. But maybe you don't need that to happen as much as the 55 year old diabetics and heart disease victims need just to survive.