Why fight ISIS?

[Fidel_Castronaut]

Before dealing with them I'd rather find out why, otherwise considered sane people from foreign countries are flying over to join their mindless cruelty.

Many are sold an idealized vision of what living Under a 'caliphate' is like. Several people from the UK who have gone over and then come back have said that for people at the bottom life is a nightmare, destitution, poverty, race and murder an every day occurrence. several girls from the UK have gone over with the hope of being brides to fighters, only to realise they are actually joining a glorified gang rape culture where they are abused, at least according to some defectors.