Why Does One Series Need Three Diffrent Parts, Each With Their Own Episode Guides?!?!

Do you know how frustrating it is to try and figure out how to get the next episodes of Saiyuki with limited space on my HD, my downloading programs inexplicable inability to let me look inside folders, and the fact that this [expletive-deleted] show has three different parts, each one of which starts their episodes with 'episode 1'?

*takes deep breath*

I really should be studying, but I'm just ready to be done with everything.