You can understand why if you think about how division and multiplication are related. 12 divided by 6 is 2 because 6 times 2 is 12 12 divided by 0 is x would mean that 0 times x = 12 But no value would work for x because 0 times any number is 0. So division by zero doesn't work.
At the time of his death, Keith was suffering from emphysema and terminal lung cancer, as well as mourning the recent gunshot suicide of his 27-year-old daughter, Daisy Keith, ten weeks earlier. He committed suicide after he returned from a stay at a hospital.
In 2003, Allan and his wife, Angela Herzberg, moved to Tennessee from California. On October 25, 2004, Angela Herzberg committed suicide after suffering from depression and migraines. Allan initially put his career on hold, but soon turned to music to deal with the loss of his wife.