What Mtts said is right on the money. I've had the pleasure to fly in both rotary and fixed-wing military units, and the pilots that were separating from the service with a fixed-wing background ALWAYS had access to more abundant and higher paying jobs.
There are rare exceptions to this of course, but consider the fact that there are so many under-paid Army warrant officer helo pilots, with so much quality flight time, trying to get quality positions after separation from service.
I once considered the switch to helo as well, because of the fun factor. But as a career, it's a simple question of supply and demand.
SF