A Love Story - Breakfast in These Five Years

An 80-year old man was waiting in a queue at the bus stop. There was no sign of bus coming. Time and again, he looked at his watch anxiously, and murmured that he would be late.
A young woman behind said to him, "Sir, I just read the news on my iphone. There's an accident on the Harbour Bridge. The traffic is now very slow." The old man said sadly, "Thanks, so I'll miss my appointment at 9 o'clock then." Seeing the old man was still so anxious, the young woman tried to chat with him, "I believe you are retired. You don't need to be in such a hurry like us. It doesn't matter too much if you're late, does it?"
The old man hesitated for a second and said to the woman, "My wife is living in a nursing home. She'll have breakfast at 9 o'clock every morning. In the last five years, she liked me to have breakfast with her together. " He then paused for a few more seconds, and continued, "She's got dementia ... True, she doesn't know if I haven't come to see her today ..... In fact, she doesn't know if I have come to see her either ....... Frankly, she doesn't know me any more ..............."
Apparently not knowing what to say, the young woman remarked, "Then why ... why do you bother so much to be there everyday and in time?"

The old man looked at her calmly, and smiled, "But I still know her."

The answer was so simple, and yet firm, and it represented so much commitment and love from a husband to a wife!
We all have said in the wedding vows, "I (xxx) take you (yyy) to be my wife/husband, to have and to hold from this day forward, for better or for worse, for richer or for poorer, in sickness and in health, to love and to cherish; from this day forward till death do us part." ...... But can everyone do it?