Some people, despite their chronological age, are just old! Others are quite the opposite. I think it is more of a matter of spirit for the most part.

On the other hand, not unlike WW's comment, a woman I knew dated a younger man who thought the BeeGees were the original Sgt. Pepper's Lonely Hearts Club Band! Which brings up the matter of overlapping experience. This, to me can be of true importance. If a couple doesn't share a certain level of mutual experience, then I think there can be some real problems. In my thinking this is the deciding factor. I doubt I could spend much time with someone who never seemed to have any idea what I was talking about unless I gave a lengthy explanation. On the other side of that, I would not want to have to be constantly asking for some recognizable point of reference just so I could understand what my partner was trying to relate.

But if this were not an issue, I would think that the relationship would likely be well worth pursuing.

As to the questions Anna raises about who dies first or who sags where: None of us knows how long we will be in this world. None knows when a loved one might be taken from us. Loving anyone at all presents the risk of losing someone you care deeply about. I think it is far more important to just forget about all of the "what if's" and to give the gift of love you have within you today. Give it freely. Give it all! Give it now!