It's through choice.
But I'll still take your kind wishes, thanks.
I did this in 2014, first time in 30 years. Best thing I ever did and should have done it years ago. A few months off allowed me to clear my head and work out what I wanted to do, and completely changed my perspective. I'm very lucky in that I had a few options appear quickly as what passes for the 'specialist knowledge' I have is in demand but I was prepared to take longer if I had to.
Can understand your frustration OP.....employers should recognise the value in older employees. My senior team are spread over quite a range but one of the best is 59, and is a great role model in a number of ways