Okay, so I was thinking about this while playing my masochist run of The Witcher 3 on NG+ Death March. What difficulty do you normally play your games on? Personally, presented with the classic four options (easy, normal, hard, very hard), I usually go with the Hard option. Typically, I play the game of the second highest difficulty, and if I like it, I usually end up playing on the hardest difficulty as well. Recently did this with the Bioshock collection (1 and Infinite).
Wasn't quite sure which options were best for the poll, but I think this works pretty well. Anyway, interested to see your choices. Elaborate on your choices as well!