I had never hurt a bee/wasp in my life, until I got stung and for no other reason other than the bee was evil/bad/out it's depth, whatever. Now I kill everything that I can that makes a buzzing noise and invades my space, as I realise they can not be trusted. It now matters not to me that they are good at helping the Earth not to die. If it makes a buzz noise, it gets a boot in the head.