When mine was maybe a few months new it was almost cold to the touch, lol. But yea, I've had mine for like 2 years. I don't know how the newer models hold up, but most Asus laptops seem to really show their age in one way or another.
Then again the G74 series has really crappy intake placement to begin with (intakes are under the monitor where you can't blow them out effectively, you have to either blow compressed air into the exhausts and risk blowing a fan out, or take the whole thing apart because the fans are tucked under the MOBO).
Most people recommend you place a small little toothpick or something into the exhausts before you blow to keep from blowing out a fan. Problem with the G74 models is that the heatsink is in front of the fans, and you can't really like... poke something into the heatsink to reach the fan blades, lol. You may want to do a repaste after like a year and a half too, cause it'll probably be all dried up and useless due to the horrible pasting Asus or whoever has done.