Many parents believe in the "if my child isn't welcome to an event, then I'm not welcome," theory which is a pretty unreasonable stance. Your child isn't welcome in a bar, are you going to cause a scene to a bouncer for obeying the law? Probably not. Of course, weddings are celebrations of love for family and friends, but they also aren't a whole lot different from a bar at the end of the day. Wedding receptions are often big, loud parties with alcoholic beverages flowing, dancing, speeches that require silence and a mature attention span, formal dinners that demand proper table manners, and lots of adult conversation. And, that's not even including the sentimental, vow-exchanging ceremony that can easily be destroyed by a crying baby who won't remember anything about this day and definitely doesn't understand it. While children look cute screaming down the aisle with a basket of flowers and a party dress, they can often be distracting to both the newlyweds and their parents. Child care of course can get expensive, but usually the couple is paying for all your food and drinks for the entire evening, so include that in your budget before you complain.