I bought a herd that was already mixed (horned and unhorned) and at the time the horned girl was bottom of the pecking order. I've come a cropper with a horn stuck under my ribs once (she didn't do it on purpose, I happened to bend down to pick something up as her horns came up). I have 4 children and they have regular (non goaty) friends - I am on tenterhooks with the smaller children near savannah.
We had Sixpence, our Tog kid, disbudded at 4 days. I felt mean but it felt like a measured decision based upon experiences with savannah.
She has also had her horns caught in the fencing and as she pulls back she sometimes breaks down the fencing, the vet has received a blow in the 'boy area' from her horns and I would find it more difficult to rehome her due to horns should something awful happen and my not being able to keep them (heaven forbid!)