A devout Catholic couple is in a dilemma whether to opt for homologous IVF or not after being married for 12 years and still no child of their own. They subjected themselves to infertility work up but...

A devout Catholic couple is in a dilemma whether to opt for homologous IVF or not after being married for 12 years and still no child of their own.  They subjected themselves to infertility work up but to no avail.  They tried many sexual activity techniques hoping for a baby but to their dismay none was given to them.  They sometimes argue and blame one another because of this problem.  The wife is so eager to have a child.  The husband is okay with or without a child.  They visited the wife’s obstetrician who was responsible also for their infertility work up and suggested if they really want to have a child, they would go for IVF.  They have options: they can have their own egg and sperm or they could find a third party for surrogate.  They really wanted to have a child of their own and so they come to you for advice since they were thinking to undergo homologous IVF.

What is your advice to this Catholic couple?