I am a committed Christian and am pro-IVF.
There is one sin associated with IVF, and it can be completely avoided. That sin is the destruction of leftover unused embryos.
There are 3 ways to avoid this sin of destroying leftover unused embryos: 1) donating to other infertile couples, 2) placing for adoption with snowflakes.org, or 3) using the embryos in subsequent IVF attempts until the embryos have all had the opportunity to implant.