Usually hard ( or the difficulty above normal ) . I play for challenge . And 9 times out of 10 the normal difficulty is too easy for me , and i tend to get bored . If nothing is pushing me to better myself and think, i am not entertained . I have been playing games so long , that i rarely die onnormal difficulty , no matter what and how many mistakes i make . This of course only applies togenre i like and am familiar to .
That being said , i don't belittled others that play on normal difficulty . I understand that not everyone plays for challenge , or that normal difficulty does present THEM with a challenge . And i'm fine with that . As for easy difficulty , while i don't understand why an experienced gamer would want/need to play on easy, but to each their own . I have a friend with whom i game regularly , he is bad a videogames plain and simple . Whenever we play co-op anything , he used to want to play on easy , i told him no , because he won't better himself by playing on easy . So we always play on normal , and i hold back so he a) dies , and b) learns to think while playing to not die . Now he isn't so bad , and is enjoying the challenge the game presents .
What does annoy me though , is people that hear/ know games are hard , buy/play them anyways , then complain about the difficulty . Like Dark souls/ ninja gaiden 2 . I mean i you know something beforehand, ignore it , buy it anyways , i don't think you have the right to complain , you were warned . It as if i made a cherry flavored cake , told you it was cherry flavor, offer you a peice , and the you complain that you don't like cherry after telling me you want a peice.