"50’s nothing these days"
If your life is fairly sorted, it might not be.
But if you've never found your career, or are single and your children are Adults. It's an age where you question your life choices and sometimes beat yourself up over them, because your time has run out.
How you are, thought of, treated and feel physically changes.
If you aren't changing physically, in ways that interrupt your life and that could just be vaginal dryness, or loss of sex drive (which if single means loss of affection) then you are one of the incredibly lucky few.
It's about accepting changes, I suppose, but when they are fundamental to who you was, then that's extremely difficult.