I share in your frustration with this issue. I have a powerful enough computer that I would really hope it could chew right through these rendering jobs… that being said.. the average render time for me is 4 hours, the average length of my composition being 3-4 minutes… This includes an audio mp3 along with whatever footage or video etc… however on my last job I animated a 2d photo by chopping it up in photoshop by foreground, mideground, and farground etc.. so basically I’m importing 4 or 5 images into AE.. I drop in the audio track… with no real effects aside from manipulating the images with keyframes.. it took 4 hours… I’m on my second render right now as I forgot to include the audio in the first go round…. which means.. just to manipulate the images alone took 4hrs and 57 min!
Thank god for my mac and apple motion!!!