@Idontpostmuch interesting point and actually very true.
But I still stand by the fact that even your very valid point doesn't help self esteem and sexual connection when in a relationship.
When you don't have sexual issues yourself and are a red blooded sexual person who does have 'instinct', having to have academic discussions, analytical discussion, compromise and negotiation in order to have your spouse have sex with you just isn't a turn on and affects self esteem.
Sure they may just have low libido, ED, trauma, asexuality or a host of other things which isn't their fault at all. But being on the recieving end, when all you want is a normal sexual relationship with your partner is soul destroying.
When you've experienced meeting someone, fancying the pants off them, and them fancying you, and then the natural instinctive flow of things, without words spoken or discussion (one minute your talking, the next your kissing, then one thing leads to another) then it can be hard to suddenly not have that. No amount of talking, sexy lingerie, nakedness, date nights or flirty banter will ever end in naturally 'one thing leading to another'.
Rather than just getting into bed and naturally flowing into sex, nope, instead nothing happens. Or having to have a discussion beforehand and negotiate/compromise your way into having sex with your partner just isn't the same. It feels unnatural. You want them to instinctively want you and be enthusiastic. Not out of obligation, or for the sake of the relationship. Just pure natural desire. If that doesn't happen it's soul destroying no matter what the cause for the lack of sex is. When you do finally have sex, it's just not quite right, even though it may be really enjoyable, as in the back of your mind, you know the work that went into it. When you've experienced natural, flowing and mutually wanted sex before, you know the sex you've just had isn't quite the same.