I currently work for a BLS transport who RARELY does anything code3. But when we do, it seems the company is divided, half want to go as fast as the diesel can flow and the other half use it with a feather touch to ensure a "speedy, get there faster and alive" trip.
I personally agree with the later in almost every situation. But I do want to point out the there will ALWAYS be the one in a million (ie. AAA) injury/illness that requires surgery an hour ago, which makes the speed a required thing.
We have the lights and sirens for that one in a million chance, but I think far to many tend to "abuse" it or simply do not fully understand it's repercussions.