I want to preempt anyone who may talk about slippery slopes. We can deal with issues in a practical way as we find them, and it doesn't commit us to any particular further action unless we individually and collectively decide to do it, with proper thought and discussion. However, societies continue to improve over time, so further improvements are likely. Maybe some day we will decide it is worth removing the word 'kill' for example. It's up to us, based on what we think is important and what we think we can achieve, at any point in history.