What's the hardest part of being a father?

People don't talk much about the hard parts of parenting... Whenever you're asked about how you like fatherhood, your answer is always, "its amazing!". That's definitely true, but its not the whole truth.

Having nothing to do with how much you love your kids, being a parent is a tough job. Specifically, while its most often the case that the mom's job is the most challenging, there are some tough parts about living in Dad-ville as well. Let's get 'em out there...