It makes those who are too cowardly to accept reality, too fortunate to have ever dealt with monsters or real violence, too blinkered to understand that they should stay silent on issues they don't understand - it makes them feel better.
They can sip on a smoothie in their safe little bubbles, and nod sagely at the others of their ilk who have never faced these monsters, and tell themselves they are good people because they want to allow beasts to continue to destroy, taint and tarnish every human life they come in contact with. Rather than having the courage to accept that it is the right, moral, humane and kind thing to put them down.
I could say I wish they had to reap what they sowed and that defenders of these creatures actually had to come in direct contact with these monsters. But I am too ethical and moral and humane for that.
I just wish they would somehow realise that they are not, in any way, better people for being moral cowards who care about appearing nice far more than about the reality of the damage done to humans by allowing these creatures to live.