Are the Swiss so anxious to get rid of their own people that might be ailing or old? What's wrong with a society where there is no compassion - they have no remorse for the loss of life.
That is one way to look at it but the other perspective is that you are helping to end their suffering. Just imagine being plagued every day from the pain of cancer or some other terminal illness. Being able to take your life just sends the suffering, that's all.