What should I do if my wife doesn't let me touch her?

Netizen submission:
To be precise, she doesn't want to touch anymore.
When we first got married, we did. Not often, maybe three to five times a month, each time she just seemed to complete a task.
Later, the frequency gradually decreased until it stopped completely. I asked her if I did something wrong, she said no, she just didn't want to, found it boring, and asked if we could not do it anymore in the future.
I tried to fight for it many times, but she resisted very strongly. When she saw I was angry, she would come over and hug me, saying that apart from that, everything else was fine.
She really treats me well—cooks every day for me after work, remembers what I love to eat, and gets more anxious than me when I’m sick.
She’s also good-looking, and everyone praises her when we go out. But she just won’t let me touch her, even turning her head away from a kiss.
I’ve tried communicating, trying to endure, trying to solve it myself late at night. But lying next to her, the more I think about it, the more wronged I feel.
I’m still young, I can’t just live like this forever, right?
Why is she like this, should I get a divorce?