I spent 4 years turning wrenches on Army helos. The fact is, the very thing that makes them so useful, is what makes them so vulnerable.
They are very maintenance intensive and very unforgiving when things go wrong. But they are the only thing available that can do what they do.
The V-22 may improve things a bit, but they are very expensive, require lots of maintenace, and when transitioning, just as vunerable as any helo.
Until they make a helo that can carry both troops and enough armor to survive heavy weapons fire (or crashes), things won’t change.
Bingo.