Physical attraction is important, of course it is, especially to begin with, but there’s so many other aspects - similar interests, humour, just simply enjoying each other’s company.
I married up, and I’ve had many many years of mates telling I’ve punched above my weight…which I take as compliment.
I met my wife at a BBQ 25 years ago and we just clicked, and in attractiveness she has always knock me into a cocked hat - we’re now in our early 50s, she’s still gorgeous and we get in as well now as we did 25 years ago, if not better.