I don't think it's "natural" at all. There are plenty of Hotwives on this site & others whose "BBC Cred" is indisputable and who still have a VERY robust sex life (PIV) with their husbands.
IMHO generally the only variable w/ regard to adult relationships is one party looking at (1) WHAT they can get away with and then (2) HOW to get away with it.
In my previous marriage my Ex tried to sexually cut me off for non-lifestyle reasons. After trying to resolve things reasonably I told her that's not what I signed up for & gave her 2 weeks to find me a side chick.
If she didn't find me a side girl in that time I told her I'd find one myself & that I would not be sneaking around but I'd be fucking her in my house & in my bed.
My Ex threw tantrums, cried, threatened divorce, etc, etc but as the day closed in & she saw I was not giving in MIRACULOUSLY fucking, blowjobs, anal EVERYTHING was on the table again. Funny how that works.
My current wife heard that story long before we got married. She's a wonderful woman who I know puts my needs first (otherwise I'd never've married her), but she also knows that I will not sacrifice my needs for ANY woman's whim.
My current wife has a thing for black guys but she knows that the day MY NEEDS are not her priority, (the way I make HER NEEDS a priority of MINE) is the day we're done. Again, imho, that's what they call a "marriage" and that is what we both agreed to when we said "I do".
Personally I'd say (man or woman) if you can't or won't find out your partner's sexual needs & make them a priority then perhaps you shouldn't be in that relationship.
If your husband DOES want sex with YOU and YOU won't give it to him then maybe it's time for both to move on. You are a team & everything has to work for both parties.
For me that experience from my previous marriage opened my eyes. Whether Swingers, Cuck, Stag, Cuckoldress, Hotwife, Cuckquean, etc life is WAY TOO SHORT to waste a single moment on someone who won't make your needs their priority.
This is so well written that this almost should be pinned for the many ladies who have similar questions.