I suppose I was " young " enough at 54 in which to accept that my H of 34 years in 1994 wasn't going to be with me very long during his illness. However, had I been older ( there was an age difference ) I probably would have found it more difficult to accept, therefore suffering far more than I did.
I had no intentions of ever meeting anyone else so I suppose in a strange sort of way, he was still very much with me in spirit if not flesh, so yes, I can see how difficult it is to lose someone later in life.