DH is immune suppressed and qualified for an extra dose of the vaccine (ie 3 doses plus booster) because there is a question mark around vaccine efficacy for him. He was shielding (when shielding was a thing) and has a number of risk factors.
We are generally pretty cautious but we have a DS in school and I go into the office a couple of days each week.
I have a work / networking do coming up which will involve a couple of hundred people in an enclosed space. Would you cancel if you were in my shoes? There won't be any fall out for me if I cancel other than my boss probably rolling their eyes a bit.
Appreciate the risk is very small for most people but I have to factor in the need to keep DH safe so far as that is possible.