There is a third group -- which I would place myself in. I feel a strong responsibility to an environment I work in; but I also have a need for a disconnect and

There is a third group -- which I would place myself in. I feel a strong responsibility to an environment I work in; but I also have a need for a disconnect and work/life balance. I absolutely am not ok with people in group #2, but I think group #1 is similarly unhealthy -- being constantly aware of issues can lead rapidly to burnout. This is why you have to have an on-call rotation, with an SLA (i.e. all pages are ack'd within ten minutes) with enforcement for people who regularly miss pages, and keep the life-disruption to one or two team members. Obviously, anyone who's worked on a large software product knows you might get an escalation even if not on-call, but that's a hugely different workload than being attached to a pager and having to respond to them.