Oh, I meant for the pilots.
Because it's a crap load of fun to fly. It's all stick and rudder (or TR pedals as the case may be), it involves a lot of CRM between the front and the back and if you have a good crew you can really see the whole process come together. You also really get to use a helo as a helo and not a slow airplane that flies low and takes off vertically.
You should note that you haven't heard anyone extolling the virtues of night vertrep.