My ex grew up in a “business agreement” household. She never saw any affection between her parents, and expected our marriage to be the same. We had three kids together, and things were mostly fine, but it wore me down. After 15 years of not feeling like she loved me, we divorced.
I’m now remarried and we don’t hesitate to show each other that we are in love every day.
It’s not an easy situation, especially when kids are involved. If the kid was 16 or so, it might be worth sticking it out until they are grown, but any more than that, you will start to resent your wife, and question your choices gradually until it tortures you daily.