The OP might have volunteered for 24x7x365 on-call. In that case he shouldn't complain.
I'm on-call 24x7 but the schedule is rotated through several individuals. Each of us has to do it once per month. It is voluntary.
The company I work for acquired a company which required its employees to be on call 24x7x365. We ended that the first week. Several expressed their relief at not having to carry a phone or be on constant alert for an incoming call after years of doing so, how nice it was to finally be able to relax.
I've done triples and work late when it is a customer down situation. No one expects a surgeon or rescue worker to walk off the job because their shift has ended. Sometimes a man's gotta do what a man's gotta do.
The OP makes it sound like he worked 24x7x365 for a long, long time. I hope it was voluntary. It sounds like he is enjoying retirement though. I hope so.
-Tim-