The school of thought that states that suffering must be eradicated at all costs. The ultimate aim therefore of negative utilitarianism is to destroy all life. This aim is often termed global suicide.
Many philosophers reject negative utilitarianism as being a terrible moral system because it asks for the destruction of life, which is normally considered very painful to all involved.
However, achieving NU'ism goal will have no adverse effects because there will be no one around to observe them and decided that they are bad effects.
I believe in the values of negative utilitarianism. If you want to know why I haven't killed myself yet; ask a chain smoker why he hasn't stopped smoking even though it is ruining him and he wants to quit.
Addiction is hard to break...