I think where the argument is coming is the definitions and how it's being applied. I do not agree with the Catholic church that IVF is immoral. I think the appropriate words may be that IVF is not the intended divine purpose of conception, but at least to me, that does not make it immoral. Immorality implies willful intent to defy God's purpose. IVF is a means for conception for those that have no other natural means. The intent is not malicious but instead I would argue that it is in most cases the only option in the hopes of resulting in a sacred life.
We are not made happy by what we acquire but by what we appreciate.