VBC, there was some research published years ago (I think in the BMJ, but I could be wrong) about what makes people happy and what impact life event have. It concluded that each of us has a sort of baseline level of happiness that is intrinsic to us and that, although major life events will tranisiently change the level, we will always return to our baseline. In other words some people are naturally happier than other and whatever happens in our lives, good or bad, nothing will change how happy we are long term. I'm not sure I believe this theory entirely, but I think there is some truth in it. As for the specific quesiton of children and whether having them will make someone happy, surely that depends on whether you want to have them. You say that, in your experience, couples without children are happier, but I think that's unlikely to be true for a couple who really want children and can't have them. It seems fairly clear to me that this is entirely a matter of personal choice. Having children is the best thing ever for some people, that's clear from reading some one the lovely posts here, but not for everyone. Each individual or couple decides for themselves what is right for them and no-one else can really judge that choice.