If someone picked just physical then I guess the question makes sense but I think both are important, and that doesn't mean that attraction doesn't change over time. If no one found older people sexy, widows would never get remarried
I mean, when I was 14 I thought 14 year old boys were the shit! They were sooo hawt.... now that I'm ten years older, I don't get it at all. So the chances are when me and my boyfriend are in our fifties, I'll be looking at guys in their twenties wondering why I ever thought such children were sexy
We think 'old' isn't attractive when we're young, but old people must have a different opinion on that or no one would ever find love after divorce or death.