[Death by Mirrors]

I certainly did when I was younger. Part of what always fascinated me about writing was it felt a tiny bit like playing god with the fates of all those lovely characters. Kill one off? No problem. Make one invincible? No problem either. So in my early story attempts you could easily tell the characters I disliked (and thus made suffer) from those I loved (aka the sure-fire winners). Nowadays I take pride in whenever my readers can't tell who I'd elope with to Vegas and who I'll keep in the dungeon.