I think that's a personal risk assessment. My household doesn't include anyone who is obviously at risk; you never know, but we all are reasonably healthy and reasonably active. So we are self-quarantining largely to keep from spreading it to others (in fact, I voluntarily did so a week before our state did anything, because I happened to be in NY when the outbreak there exploded). As a result, I am not particularly concerned about avoiding all contact, because we are likely in the "annoyance/uncomfortable but not life-threatening" category. Knock on wood, we hope. So right now, the value of staying in place, having our home and our luxuries and our grocery stores and regular doctors and office if I need to run in for something and all that outweighs anything else.
OTOH, if we were in an active hot spot, I'd probably be more worried, knowing that our local medical options are already overwhelmed. And if I were living with someone who was actively flouting, I'd have a problem with that just on general principles, because they are putting other people at risk for no good reason, and I find that morally unconscionable. If I were renting to someone like that, I'd probably tell them to get with the program or get out; if I were renting from someone like that, I'd definitely consider moving out temporarily if that were an option.