Why? Because they will hold it over your head for the rest of your damn life. My younger sister volunteered and on her own time, started looking into photographers and DJ's and bakers. Now that she's being a dill hole and taken herself out of the wedding (which she has the temerity to say was MY decision) she keeps telling me how she deserves to be treated better (wtf!) than I have because she "did so much for me." I think I might kill her. Oh, and apparently, when I asked her if she would go to the restaurant where we're having the reception to check out the food for us, and told her right away that we would pay for whatever they were having- wasn't good enough. Glad she didn't mention that before we paid their nearly TWO HUNDRED DOLLAR bill from there! F*CKERS.