My initial reaction was that THIS woman likes to be treated as an individual, not placed in a category with "all" women, who presumably all like the same things....

But after reading your details I decided to be more gentle. Same message though. I would still recommend treating your wife as an individual, with unique likes and dislikes. I also think of the Five Love Languages. Maybe physical affection doesn't communicate love to her the same as it does to you. That's only one of the five. The other four are:

Acts of service. This would include help with chores, taking care of something important to her, etc.

Time spent together. Anything from just watching a movie to a weekend getaway.

Words of affirmation. The "I love you," and also more specific, the things you love *about* her.

Gifts. Small things like flowers or candy, or bigger things like jewelry.

I had to look up that last one--because it doesn't resonate with me. I'm not a "gift" person. That just goes to show the individuality. Another woman might melt over flowers, but I'm not one of those. Anyway, I'd advise you to learn what your wife's love languages are, and do that.