Where I am (Canada), COVID-19 is categorized as a Risk Group 3 human biopathogen , along with HIV, Monkeypox, SARS-1, West Nile, Yellow Fever, mad cow, Creutzfeldt-Jakob, rabies, chikungunya.
Legally, the RG3 pathogen is "a category of human pathogens that pose a high risk to the health of individuals and a low risk to public health and includes the human pathogens listed in Schedule 3. They are likely to cause serious disease in a human." Here is the text of the law with that definition.
Notice the legal difference between "public health" and "individual health"? Public health is mostly about managing group behaviors so that society can keep on doing what it does without being wiped out by disease.
What individuals should care about is individual health.
Just because COVID presents as a cold during its acute phase doesn't mean it's not doing heart or lung damage. I personally know three people who will likely never be the same after being infected. I have zero interest in ending up like them.
The pandemic is still raging - 1 in 19 people are estimated to be infected in Canada this week ) - but public health has decided it's under control "enough." If you're happy to be fuel for the economy, go nuts, I guess. If there were outbreaks of West Nile or Yellow Fever (same RG3 classification!) at work or schools, we sure as hell wouldn't be going there. But since really sick people vanish from public view, this is easy to keep a lid on.
We know that aerosolized COVID can float in enclosed spaces for hours, and that you can get infected by walking into a room long after an infected person was present if ventilation/filtration are poor. A decent FFP2 or N95 that fits you properly will significantly reduce your chances of getting sick. It's such a simple and easy thing to do.
Everyone thinks they aren't susceptible to propaganda, but no one is wearing a mask.