I believe there is an initial period of sexual attraction that we mistake for love.
Now I didn’t really have that, no.
However, through shared experiences you bond with people and affection and love follow.
Really? So you've never been in love, at all, even something that didn't work out with someone who wasn't suitable? I find that very sad and yes, rather cold. I'm not disagreeing that many people's feelings of lust/intense "in love"-ness are with people who aren't suited as life partners or co-parents and that these feelings do die down and fade, but it's sad to me that you don't even believe that anything more than companiate closeness can or does exist.
I think plenty of people do do this and don't think it's the scandal of the century or anything, but I would be utterly devastated to know my spouse thought of me as "a bit dull". DH is my favourite person in the world still, after 15 years and two small children, and he thinks I am incredible. Both of us feel amazed that the other chose us and lucky to have each other. I am perfectly in favour of the more pragmatic approach to, say, arranged marriages where both parties go into it with open eyes and not expecting a whirlwind of romantic love, but your perspective is just... Sad. Your DH doesn't know how utilitarian your judgement was, he doesn't know he kind of bores you, he doesn't have the opportunity to build a life with someone who makes him his best self by reflecting that image of himself back to him through her eyes.
What would you have done if he had turned out to be infertile?