Prefer second engine in case of engine failure......
...It is often said that the second engine just gets you to the scene of the crash quicker.
Twins are complicated and require delicate handling and currency is a major factor in flying this class of aeroplane.
My recommendation - stick with a single unless you're doing large amounts of over water or over mountain flying (even then beware of Driftdown heights)! Much cheaper (but not as much fun!!!!!)