Behavioral experts agree: you never ask your kid what he wants to wear to school. Children, with their under-developed cognitive skills, don't quite possess the abilities to narrow down the options in their closet and analytically eliminate choices until they can conclusively pick the blue pants and the red shirt.
A young brain just spins its wheels when presented with a seemingly limitless number of choices. It does not know how to perform the process of elimination. Instead, you are supposed to eliminate choices ahead of time. You ask the child "Do you want to wear the red shirt or the green one?" Presenting fewer initial choices makes for an easier problem space for the brain to navigate.
Personally, I have about sixteen different ISOs scattered on my hard drives. I have a couple of Ubuntus for a slew of different architectures, at least five Kubuntu live CDs, a few openSUSE distros, probably two different versions of Arch, and something called "Sabayon". Last time I checked, I still run Windows. I'm happy to download these things left and right — hell, it almost justifies my bizarre obsession with BitTorrent — but I have yet to actually pick a distribution that I can stand.
I don't even have a particular requirement that the ISO I download fit an architecture I currently own. I find myself frequently eying the purchase of a new system or contemplating what it would take to assemble a new PC from parts. Ultimately, I always seem to decide that both of these things demand too much effort, and I subsequently wind up going home to my old, reliable Pentium III and forgetting the whole matter for about two weeks.