The iPhone never leaves my side.
It's pretty much an addiction.
25 hours a day.
Comes off the charger around 8am and goes back on around midnight. Might get a trickle charge in every now in then throughout the day. I probably use it for about 6 hours of that and the rest is stand by.
Mine is permanently attached to my hand with the lights on. Addiction isn't the word.
In all honesty, I use mine so much I have to charge it twice a day.