I've had some long sessions of 8-10 hours--mostly long sessions in a co-op game over beers-- over the years and never had any problems. Hardly every game more than 30-60 minutes at a time in general though due to being busy and just not being into games as much as I used to be. So long sessions are reserved for some game I really get sucked into, or playing and drinking with a friend all night a couple times a year.
In any case, you can't play the game to death, but long sessions are harder on consoles/PCs from keeping the heat in the unit up so long.