" There's a guy at work whose wife is expecting a baby... Maybe his wife should have a talk with him about working for a company that lets him work from home. "
#1 Are you saying he should change jobs so that he can be available for a call for the singular time that he may get a call that its time for her to give birth?
#2 Not all jobs lend themselves to working from home. What about those people who actually have to be somewhere to get work done?
"There is no situation I could be in where an incoming call is important enough to warrant my immediate attention."
So, if your mom/dad/wife/child/friend had a heart attack and had moments to live, you wouldn't feel the need to try to see them? Or as a more common issue, if one of those people had a flat tire and found the spare was flat also, you wouldn't want to go help them if possible?