Regarding the vaccines, various folks are talking about first evidence that while the vaccination may protect (most) vaccinated folks from getting ill, it does not prevent them from getting infected, and potentially infecting others. That would be really unfortunate, since it would just increase the number of asymptomatic spreaders, and would also mean that vaccinations do not primarily help reduce the prevalence of the virus. So un-vaccinated folks and those unlucky ones for whom the vaccination does not produce immunity will continue to be in danger. Add to this that we don't know how long immunity (due to exposure or vaccination) lasts, and we still have an uphill climb.
Even though I will be getting my 2nd Pfizer vaccine (thank you, VA) in 2 weeks and DH has had both of his (thank you, VA), I don't expect our behavior to change much with respect to masking, distancing, and not gathering indoors with others. I will feel less paranoid about getting COVID (and becoming a long-hauler) but I fully realize my potential to infect (and kill) people even though I have been immunized.