I HATE QUARK.
I want to find out if design studios I want to work for use InDesign or Quark. If Quark is popular, then I will be more open to learning ir. However, at the moment I absolutely hate it. Sure InDesign has stolen loads of bits from it, but InDesign is by far superior now and if I design in InDesign I feel I have more design freedom because I am comfortable and not held back by it.