My 50s were one of my best decades. The DSs were heading for independence, though they boomeranged a couple of times. By the end of the decade, I'd been holding down a job, doing an OU course, playing a big part in local politics and enjoying several excellent Ramblers'holidays as a single person. Oh and I had become a granny at 51 and often enjoyed the company of GD and her half brother at weekends. Many years later, at 78, I am by no means clapped out though I've taken full advantage of NHS provision of replacement joints.
So why be morbid? There are so many ways in which we 'elders' are so much more able to live a full life than were many of our predecessors.