Umm, because I love the hardware store. Because I like crafty things. Wait...because I want to. While the first motivation may have been the Proenza Schouler Bungee Bracelet (seen here), or the Giles & Brother Braided Hex Bracelet (seen here), I find that I only need two reasons to make anything: because I don't want to spend the money for the original - and because I wanna.
So, just in case my versions don't come out as good as Erica's (her full instructions found here), I'll at least be satisfied knowing that I killed a few daylight hours and saved hundreds of dollars. Done and done.