i've noticed that my hearing has been kind of bad for the past couple years, simply from too many concerts and my creative. so i try to keep it at around 1/2, it doesn't need to be much louder than that.
Yeagh its funny...Ive started to see alot of people wearing those foam ear plugs at concerts...I should start trying to be a little bit easier on my hearing...
3/4 is good cause u might still be able to hear if someone is talking to you, but don't use the in ear phones, they will eventually destroy the youth and leave us all with hearing aids...