Originally Posted by
Triceron
I think the problem with DT's is the fact they require their own building. Unless you're intentionally doing a DT rush, you're putting a lot of time and resources into going for a unit that you might not use successfully just because your opponent makes a few detectors.
A couple detectors completely ruins the use of dark templar, and I think it's a bit stupid to branch tech just that one unit that doesn't have a specific purpose that can be covered by other units. Even High Templar are more useful for their ability, whereas the DT's damage can be covered by Immortals or Colossus dealing comparable damage against either light or armored units.