Same with darts. If you don't sweat it ain't a sport. Also no pub game should never be called a sport.
I like darts. The atmosphere, the battle at the oche, the way their man boobs wobble with each throw of the darts. Snooker is dull.
Snooker and darts may not be sports, but they are still more of a sport and certainly more sporting than fishing, fly fishing might be sporting, as you have to outwit your foe (because fish are oh so clever ) and you might even fight with them to win, but fishing in a pond/lake is about as sporting as giving one boxer lead lined gloves while tying the others arms behind their back.