Why would anyone buy an 8 gig iPod?

The 8 gig iPod Nano costs the same as the 30 gig iPod video. So why would anyone buy the 8 gig? I want a red one and I was happy to see it's now available in 8 gigs because 4 might be too small for me, but a pretty pretty colour and $10 to AIDS isn't enough to make me buy 22 fewer gigs for the same price!