I'd argue that anyone that says that physical attraction didn't play the primary part in their relationship is full of ****.
There have been some studies that have been conducted that seem to show men see the most traditionally feminine women as one-night stand material and women with a more masculine face as marriage material. Interesting stuff, because I've seen results of a similar study that women view men with a less-square jawline as marriage material, and a more angular, traditionally attractive male faces as wham-bam-thank-ya-maam types.
They wonder if this goes back to people being conditioned to think more attractive partners are more promiscuous and more prone to infidelity.
When I was single I certainly used physical attractiveness as the first filter. It was a real simple 'would/would not' categorization*, tho. It was never OH MY I MUST PAINT YOUR BEAUTY AND FOLLOW YOU TO THE ENDS OF THE EARTH. A would was a would and all woulds go in the pursue category. No such thing as "barely a would" or a "solid would". All woulds are treated the same.
*miscategorization of woulds and would nots often occurs when when inebriated and requires tactful revision the next working day.