Not only would they start offing themselves for other reasons. They would also start offing others as well. First they would start offing those whose lives seemed to be over. Then they would go after the “useless lives”. After that there would be the lives they feel are not helping humanity, sort of a Uni-bomber sort of thing.
Sanctity of life does not require quality of life. These people should read A day in the Life.
You mean "One Day in the Life of Ivan Denisovich," by Aleksandr Solzhenitsyn?
Regards,