Asking if you wouldn't hug a grandparent until a vaccine, or similar, is found is a complete over reaction in my opinion. If you would be happy living life like that then all credit to you, but that's not living in my opinion.
Being asked to make concessions for a relatively short period of time is all well and good, but no one can say that that's 'living', and you can't expect the majority of people in the world to continue existing just because there are some vulnerabilities when vulnerabilities exist in other aspects every day but they've always been part of our lives so we don't over think them.
Aberdeen is locked down and it's beyond frustrating to be back in that position, but it's even more frustrating to be told that the new infections rate is dropping, no one has been hospitalised as a result of the outbreak, and yet we might be getting it further extended. And that all started because a small (in the grand scheme of things) group of people didn't socially distance and went to pubs etc, and yet everyone in the city is feeling the punishment as a result. It's just not feasible as a long term option to be stopping and starting at a moment's notice because a few people get infected.
I'm not saying there's not a need to be cautious but there's a difference between cautious and over zealous, and there's a massive difference between any form of living and merely existing.