I will try to keep this short, we have tried for a couple of years to have a second kid, and it looks like we may need IVF. We always said we would not do IVF, we have a wonderful son, a very happy life as a family of 3, the only reason to do it would be my own burning desire to have another. DH is happy either way, one or two kids. Then I look at the state of the world and think maybe if it doesn't happen there is a reason for it not working. Are people with two kids always happier than people with 1?
AIBU- Of course not, it doesn't depend on family size on how happy you are
YANBU- More kids, more happiness