Isn't physical attractiveness a fairly subjective call? We have some so-called measures of physical beauty laid on us through media and fashion but it is the few and the seldom seen who match Brad or Angelina. Then there is the level of the relationship. Is it just temporary and for fun - a surface thing in which case maybe the surface appearances come to the forefront (along with those of us on TMF, the ticklish factor). But in a sustained, longterm relationship isn't it more of a full meal deal - a match of personalities, attractions on many levels - mental, physical, emotional? In the realm of a deeper, long lasting, mutually fulfilling relationship I believe there is a match (and more than one) for every physical type imaginable and looks, while important, are probably not the first item on the list of qualities. Bodies and looks are ephemeral things that wear out, degrade over time, wrinkle, bulge and lose that youthful sheen of taut smoothness. All that being said, it makes sense that there usually has to be some degree of physical attraction in a healthy relationship.
And i suppose if there are two people for whom physical beauty is numero uno on their list of attributes for a relationship, go for it and more power to them. Seems kind of limiting to me but then I doubt they care one whit about what i think. I'm physically attracted to my mate as she is to me. But if she were terribly disfigured in some accident, I'd still be with her because there are a host of other reasons that we have a relationship. I suppose the question beneath the OP query is whether i would've been as attracted to her if she been in the horribly disfiguring accident before we met and would a relationship have taken the same course? probably less likely but not impossible.