I've never been an active facebook user, and have considered deleting it. Perhaps I will when it completely becomes useless. Also, there are several problems with FB.
The more likes something has, the quicker it climbs up the News Feed. This is a problem as the more friends you have, the more likes you will get as well. Therefore, friending every single person you can find is the ideal way to get you posts up on someones News Feed. (assuming you don't pay any money)
Privacy. Being tagged in pictures, putting a picture of yourself online, sharing your age, location, and many other factors all violate any sort of privacy. On this note, there is no way to have only certain friends view a post, unless of course, you message them, which defeats the purpose of posting on a wall in the first place.
There are more problems that I could list, but I don't really feel like going into that now. Its just that I don't really see why people are so obsessed with Facebook. Forums do a much better job at creating a nice environment to share stuff.
Also, this is how I think Facebook should work