My experience as someone who was in his 40's for our son is not so much the pregnancy stuff. My "moment" happened when he was born and I held him (mum was exhausted so I got him for the first couple hours). It almost indescribable to be honest. I found it to be the most emotional moment of my life. It sounds soppy but I felt a real sense of knowing what absolute love was. He was (and still is after nearly 12 years) the most beautiful thing I can imagine (he would roll his eyes hearing it though). I got to be a stay at home Dad which was the best few years ever. Every new development I saw first hand and would blab about it. I wish you the best with your child. As far as the pregnancy goes, just roll with it whatever happens. You're missus will dictate the terms of day to day life but you probably already knew that. 🙄