My greatest fear is that I will somehow screw up my kids in some irreversible way that causes them great harm and me great guilt for their entire lives. My wife has this fear ever more deeply rooted than me, often breaking down into tears wondering whether or not we're doing this parenting thing right, or at least well enough to get by. The real fear for me is not how they behave or think or feel while they are under my roof. I think my wife zones in more on that aspect of it. For me, the real dilemma is dealing with how they act when I can't get to them, when I can't directly direct them, when they are on their own.
Living the life and writing (some of) it down for your reading excitement.