[HajiShirazu]

If your one goal was to protect against a gutshot straight draw then you should probably go for the turn raise, but there are more hands that can beat you than just those, and more importantly, those hands are much more likely. I'm talking about hands like the naked Q/K of spades, sevens, and pocket pairs. These are hands that can either call profitably or almost profitably for one bet but can't do so for two.
From a value standpoint I find that no one will ever fold an ace and usually won't fold any other pair if I just raise the flop. Then, they call the turn because the pot is big, and if they have an ace or sometimes even a king/worse (since these people are bad) they pay to see it on the river. And a hand like AQ-AT is hard to get away from here in a pot of this size. But when you raise the turn, even the poorer players can see the light that their hand is no good, and so you get half a bet out of them instead of three. You get a very large portion of these bets, far more than you lose to the guy with the gutshot who is costing you a few tenths of a BB with his calls.