Agreed, angelos02
I'm assuming you had your tongue firmly in your cheek, ShadowSpiral when you wrote about pure selfishness on your (joint) part.
While I am not certain of agreeing everyone has a "right" to have children (as in Human Rights claims!), I am sure those who have problems and go down the IVF route have done so because nature intends that we have offspring, and it's purely instinct to go down that path, so if that's the only option, they will make that attempt as best they can (and good luck to them - they obviously wish very strongly to try).
It's clearly not 'essential' for everyone (I'm single and have never had any wish for children) but I know the urge is massive for the majority of women, and bringing a new child into the world is life-changing and hopefully joyous for both partners (usually, unless the child is abandoned by one of them). Not sure men express the same wish to the same extent, but clearly there for many, too.
I think calling any part of this selfish is a recipe for disaster - there should be no obligation to have, or not have, children. It's clearly the choice of the couple and no-one, religious or not, should think they have a right to criticise or lay down rules for that couple to follow.
Certainly if someone started telling me how much I am missing for not being a parent, I'd give them pretty short shrift, and explain how they can take a long walk off a short plank. Or even, since they are so keen, to go forth and procreate, 'cos they have no business telling me how to run my life :)
My final two-penneths.