Because life would be too enjoyable and you wouldn't want to leave.
What happens if you like me and someone else dislikes me?
Because time flies when you doing something you enjoy. You are more conscious to the passage of time for dislikes because you don't want to waste time on it.
because hatred outlast love by thousand times
Then how come you can't get things you like to last longer, and things you dislike to end faster? Think about it.
I realize, I just wish to enlighten some if ever so slightly to why I conclude such. ^_^ P.s, no clue why you say that. O.o
then how could you truely appreciate anything . . .