Just 5,000?

What the heck is the point in having in having a friends limit on Facebook? Myspace doesn't do it. Are they trying to prevent a page from getting to clogged from posts from friends? I think 5,000 friends can do that. Heck, 50 friends can that. It's true, you can create a fan group with an unlimited number of fans, but ...for some people the feeling isn't the same, plus sometimes they're just created and left alone.