A Cool Guide on Infidelity Opinions by Country

Yeah and what does "not a moral issue" mean? It's asking a question about morality. I would suspect the question may have been translated differently into things like French for so many people to be confused enough to believe it's not a question of morality.

Yeha, this makes no sense.

This would make more sense if they were asking if open relationships are immoral.

I would assume it means having sex outside marriage. Not seen as a big deal on France. Big deal elsewhere, but its a spectrum. There are lots of promises we make, that we don't keep. Some are big, like infidelity, in most countries. Some are smaller and breaking them isn't immoral.

If you promise to pick up bananas on the way home and forget that's not a moral issue. I assume the same level of commitment is considered in France by some, for sex. For others, they may just accept infidelity as normal and just ask that its kept private.

At the invitation of Mitterrand’s widow, Danielle, the former president’s mistress, Anne Pingeot, and Pingeot’s and Mitterrand’s 21-year-old daughter, Mazarine, stood beside Mrs. Mitterrand at the funeral in Jarnac LA Times

Some countries don't find it that big of a deal. Different strokes, as the saying goes.

Well life go on. Whether it's moral or not, the best thing you can do is letting go, we aren't tied to each other for life.

It's not a question of pleasure but feeling. Yes the unfilled promise hurt but that's not something you have complete control over. And we may make mistake and realize we prefer this and that. However, you have to talk and share to your so.

Yep, but those are paid services. Most women would probably prefer their men don't go to places like that, but (edit: in Japan) paying for sexual services is considered very different from cheating. It's a job and transactional in nature. Find another romantic partner and that's a very different issue/transgression.