Not the least bit bitter or underappreciated. Taking care of my kids is my favorite thing to do in the world. I just don't expect societal "thanks" for doing it. They're my kids, not "society's", so why should "society" care? It's my responsibility, not anyone else's. The idea of some stranger thinking "hey, thanks for taking care of your house and kids" is just odd to me. It's just part of being an adult.
In addition to Mother's Day and Father's Day we now have Grandparents' Day, Secretary's Day, the Family Who Lives Accross the Street Day, etc. I really don't want a reward for doing what I am supposed to be doing. Seems to be a prevailing attitude in our country that something beyond the responsibility they signed up to is required to get people to do their job.
On top of it the major networks air these stupid 15 second slice-of-life reminders to read books to your kids, play with your kids, feed your kids, whatever. I certainly don't need some two-bit actress who leaves her own children with a nanny 24/7 reminding me to be a good father. I doubt anyone who is a bad parent is going to change their behavior b/c Kelly Ripa told them to.