Yes, I hate scratches. If it happens, it happens; nothing is perfect. Even a brand-new Tamagotchi, fresh out of the package has a few minor un-noticable scratches; it's just the kind of plastic BanDai uses.
I like to keep my Tamagotchis (and everything I collect) in good condition, if I can. So, I try to prevent scratches by not setting my Tama(s) down on rough surfaces (like concrete or asphalt), and I try keep the keychain from banging against the shell to much.
yeah, one time i got a tamagotchi brand new out of the package and it already had 14 gouges on it. (deep scratches) I toke it back, turned out that it was already used. lol