There are people that are more at risk, due to other medical conditions, etc (like me).
That being said, are we going to chastise dx because he went through with his wedding and reception last night? Hmm? Anyone who was feeling at-risk or was possibly feeling ill did not go to said wedding (including me). What about other events such as that?
As for groceries, you don't need to go to the grocery store to get groceries. You can have them delivered via online purchase.
Wash your hands, cough into your elbow, sanitize, don't shake hands with others, etc etc etc.
While I'm being much more cautious, IMO if one is 100% healthy, and follows all the sanitary practices (and then some), one should not be paralyzed from living life.