I am just starting out on my own tri journey and am in utter awe of people who attempt IM. I agree with everyone here who has said that you two rock! I also agree that it takes more courage to know when to stop when things aren't going well. As endurance athletes we tend to push through all sorts of discomfort and it's a very smart person who doesn't push themselves past the brink of no return. IM will always be there but your health (and life!) may not.