I'm SRE/Platform, I got paged out last night because Devs apparently can't properly crash applications. Sure, I can move hours as well but my partner doesn't care that I get off at 3 on this Friday instead of 5, she has to work till 5 and my page out interrupted our outing to the movies. Not everyone life is ultra flexible.
Same here. Applications developers and QA often can't really do their jobs, so I get roped in on every problem it seems. Plans to go out with my family on my birthday? Canceled. Plans to go kayaking with my wife on Saturday? Canceled. At this point, I am extremely tempted to leave my job, sell my house, buy some land in Wyoming or something, and just be content to be poor.