people marry for a lot of reasons, just like people cheat for a lot of reasons.
A woman may be a competent adult; gets things done, good temperament, agreeable nurturing, all qualities of a good wife.
But doesn’t mean she’s good in bed lol not saying it makes it ok, but sexless marriages are definitely a thing.
And when you have a good wife who sucks in bed is not a easy thing to do. it may seem like “she’s not his type” but it’s bigger than that, sometimes.