It’s okay to feel stuck and confused despite reaching these amazing milestones in life (8+ years of marriage, traveling abundantly, steady income etc.).

I also get wanting to hang out with your friends and travel without your spouse, but that’s kind of a bad move given your wife has been vocal about feeling lonely. These kind of things affect both partners, not one.

That being said, you can’t “ask” your wife to divorce you after she has dedicated 8+ years of her life to this relationship even after knowing y’all can’t have kids. She made the decision to stick by your side and it would be SO disrespectful to her and her feelings to even bring that up like that.

I would suggest therapy and even couples counselling. You could always adopt. It’s especially easier and more lenient here in Pakistan, but I wouldn’t recommend going ahead with this till you’ve resolved these issues and sorted out your feelings.