Why? Because it's stupid. And it's there.
PS, If you buy six months or more of account time as a gift, you get a free month!
Update! Since each feed's journal has its own rss feed (it's an automatic feature of livejournal... /username/rss/ works for most anyone), I can recurse! Yay! You people know how much I LOVRE recursion. I got up to five iterations of my journal before I stopped.