Champ select trolls

What the flying fuck drives someone or a group to ruin an entire game by picking dumbass picks like: Syndra-jungle, braum-adc, thresh-mid... You have 0 chance at winning or being even remotely helpful to the other players you are screwing over. Norms or Ranked regardless its dumb as fuck then if anyone calls you out on it your reply is simply "Have fun with the report"... ALSO I've noticed the new cancer of new champ select where the same people will hover champs such as Bard-top... I will straight ban bard simply to it on my team then the reply is "well now I'm gonna troll" BITCH YOU WERE TROLLING BEFORE. Rant over.