Though I do agree that hijab is fardh.

My first problem is with the purpose you state for it, that it is to "protect women from the lustful gaze of men." I think that the evidence from the Qur'an and Sunnah point to purposes other than this, and that this is not one of them.

But I am open to proof, so if anyone has a clear proof from the Qu'ran or Sunnah that the purpose is specifically to "protect women from the lustful gaze of men," please post it.