I was just doing holidays in several european nations including:
France, italy and greece. Was quite good and not that expensive except for paris france ( i was there while the european football championship was still going on).
The chance to be a victim of a terror attack or just of criminals is extremely slim.
Majority of people answering before me have no clue - mostly sig spammers with no money or people who know the outside only from online news articles (or playing Pokemon Go).