Why? I guess that's just how the game mechanic works... you must do the amulet quest in order to even enter the palace, arcane sanctuary, canyon of the magi and horadric tombs. It is time consuming and work-y. But .. to me, the big breathing release is the stairs in a3. That's when you really save a huge heap of time. The more characters you do up front - when you get to that point, you save probably at least 30 minutes each character.. from running them through that dang jungle. Probably closer to 45-60, regarding gearing and luck with map. The map there can be truly treacherous.....