Good calls from getter and Krice, though "major roguelike" is slightly vague, I think. Maybe rephrase as roguelikes that are big, complex, neoclassic, simulationist, or something like that? What do you think, Krice?
For my own suggestion: "Why roguelikes? So many developers seem to develop one RL after the other, instead of trying out different types of games. What makes us always come back to this venerable and slightly odd genre?" Point in case: the annual 7DRL jam.
As always,
Minotauros