I care about the asthetic's for a few reason's.
1. Big difference, you can tell the machines apart; when nintendo went with the Wii and the Wii U, I got disappointed when I saw how the WiiU console came out in design. Just an Oblong, Curved box, No design changed or shell asthetic's except your game pad... Wagering when and if they do Wii U virtual console, the icon for it will look like the Gamepad.
2. Color; why?... Everyone has a favorite color; for girls and some boys, Pink, Purple and Cyan. Most boys and some girls, Red, Green, Blue and Orange. If your going to buy a game console, there's a 45% chance the console your going to buy is in your favorite color.
3. I typically avoid the SPECIAL edition consoles such as a pokemon shelled console or legend of zelda or anything else, mostly because the mod scene in the background typically makes great decals inspired by a LOT of artists. The special editions are the same console except slightly over priced and typically have a game already bundled with them you already own.
4. Nostalgia mostly. The early consoles of the PS4 with that Blue line made it give a "Play Station 2" era or feel.... Reminds me, I miss the PSP and it's rise... We need a PSP2 or something that isn't called the PS VITA... and give it some bloody, much needed R and L 2 buttons.