A lot of people are baffled why you wouldn't want a search for your name to show results. From an idealistic standpoint, we shouldn't have to hide anything we do if we don't see anything wrong with it, but from a practical standpoint more and more businesses/clients are using Facebook to check up on people--and they may not be as forgiving. This is all ignoring the fact that teenagers and college students have been drinking and being stupid for thousands of years, but all of a sudden there is photographic evidence online and people throw a hissy fit.
I'm more worried about my writing sounding absolutely abysmal online than I am about some stupid photos. Sadly, the rest of the world does not agree.