It's always been around and almost certainly always will.
Whilst the influences and combatants may change whilst you have social and economic drivers the problems will simmer away.
The delivery of the terror will undoubtedly change from the bomb and gun to a cyber base but the constant is the ordinary people will remain the target.
The reality is that the vast majority of us will not be harmed by it but most of us will be inconvenienced by the measures introduced to combat it.
Part and parcel of life but being British we will quietly grumble away it but do bugger all about it as Coronation Street is on and the kettle has just boiled.