Answer:
A loved one passes away
Pessimistic: You loved them, they supported you, it hurts you more than it did them, they were all you had.
Optimistic: You didn't like them so now you don't have to deal with them, you are in their will, they are in a better place now, they don't have to suffer anymore.
The Benefits: There is no benefits with death or the people that pass, they either get on the train or they wait for the next stop.