Actually the issue is much broader.
The fundamental issue is of freedom. If you curtail freedoms, which Mullahs always do, then there will be people who will keep trying to curtail freedom of yours, wearing a Burkha is a valid choice, but staying alive is one too. Sooner or later your Burkha choice would get trumped by the Living choice.
Its already happened in most western countries. Pakistan can fight it, but then they get us through other means like drone bombings, sanctions, millimeter wave scanner (which will make the passenger nude).
The issue in fact is not Burkha, but the issue is the bombing, which happens because Mullahs are extremists which is because they don't allow freedoms which they say is because of Islam but fail to point out one Quranic ayat which gives this command to wear the Burkha.