Even still I have about 4 fans in my case in my case not including my video card, or CPU and its still really hot inside. And I do turn it off at night.
Your fans aren't operating at all then probably. There's no way it's getting THAT hot in there unless you overclocked everything.
It's supposed to be hot in there. That's why its got cooling.
It's never going to be 72 degrees. It's always going to be around 40 celsius/104 farenheit to 60 celsius/140 farenheit. If it goes higher than that then you maybe do need cooling or need some damn A/C in your room.