I don't quite know how to phrase or explain this but I'll try.
After any major national or international event - war, famine, earthquake, flooding, etc - we try to rebuild as quickly as possible to get back to normal. But it's never quite the same 'normal' because these events often reveal things... weaknesses in the way society is structured both physically and politically. For example, after the second world war, we started to build a better world for the impoverished - housing, welfare and, of course, the creation of the NHS. Major flooding often reveals the weaknesses in our flood defence infrastructure... we built the Thames Barrier to prevent a repeat of the 1953 devastation. Earthquakes reveal the flaws in building construction which change the way engineers design such buildings.
The pandemic has shown us that some people can effectively work from home - saving both time and energy spent on gridlocked motorways or in overcrowded trains... easing the notorious "rush hour" misery (not to mention the pollution). The wearing of masks (the correct masks and the correct way of wearing them) has indicated that in CERTAIN environments they help to stop the spread of highly infectious viruses / bacteria. How many working days, pre-pandemic were lost to people being off sick with colds and Flu? There was a time when the great British stiff upper lip demanded that we just 'carry on' and that's what we did, until people got pissed off with constantly being bombarded with colds, chest infections, etc, etc, and the culture changed, and people demanded that you stay home for a day or two when in the 'incubation' period of your infection.
We do have to get back to leading a normal life again - as a CEV individual I've been attempting to do just that, right from the beginning. Taking advantage of 'quiet' periods in supermarkets was something I did early in the isolation period. Had people coming into my home to conduct business meetings - masked and distanced - but still working (and paying tax).
What I'm inarticulately trying to say is that we all want to get back to normality again - but why does it have to be the 'old' normal? We evolve and change all the time, hopefully creating a better society (ha!), maybe doing things differently because we've learned something about ourselves individually and collectively.
Why can't we have a measured, thoughtful and inclusive re-appraisal of the way we live - and will have to live with the virus? If wearing masks in crowded places in which others have no choice but to occupy helps prevent the spread of the virus - also colds and Flu and possibly other infections, why is it not possible to embrace this as part of the new normal? Even the vulnerable want a return to normal life - they are part of society, they also work, shop, spend their money and help to keep the economy alive.
I appreciate others will completely disagree with me - but please don't tell me "wear a mask if you're scared" because I'm not, and because it doesn't work like that.