The benefit of the twin is really for long trips over water or hostile terrain, night and IMC flights, where if you are in cruise and stable, an average amount of skill and practice should still see you able to land the aircraft at a civilised location of your choice if you lose a motor
I agree with that, otherwise you don't need a twin, infact if you are not using frequently the above coditions flying a twin is more dangerous than a single (see the accident stats), and if do use the above conditions alot then you know that you are flying in seriously difficult conditions with much higher accident rates.