What do you see as the inherent issues of an 'age gap' relationship?

I have seen a couple of questions regards this. Or at least mentioned in the answers, even if it was not an issue to the asker.

Of course large age gaps, inherently mean the older partner dies sooner, or do they?

The person I love is 17 years my junior. I did not chose this, it sort of happened. I’d love to hear your thoughts, and be as brutal as you like! (I am female).