Did you know that Kirpan is used to do Bhog on prashad and langer during ardaas.
and if do a little reserch, in north america, every some minutes, some one is being rape, beaten, and all kind of crime being commited.
So i Think Our 10th Guru was futureistic, he gave us kirpan to fight agaist injuste. Kirpan is not outdated, its the ever lasting fashion for us Sikh.