It is a simple question, but it's irrelevant to the discussion we were having.
No it is not irrelevant. The fact that you refuse to answer the simple questions says a ton. A trivial reason for you, may not be so trivial for another. That is the bottom line. Thankfully, people are not obligated to stay in a marriage that makes them unhappy people, and why should they? For someone else's sense of what is "moral" and what is "righteous?" Bullshit.
It isn't an irrelevant question if we look at it as a stand alone question. It's absolutely irrelevant to the discussion we were having. Do you want to have a separate discussion about my friend's divorces? Fine, but you asked it originally in response to our discussion and it wasn't relevant.
Actually, that discussion is off topic for this thread and you have already been warned by a mod to stay on topic. I would advise you do so.