Okay, staring very simply -

Taken in consideration of a firm belief in life after death -

1. in different realms of reality and

2. Freedom of movement,

Whats wrong with a free decision to transit realms via ending one's life?

Taken in consideration of no belief in an after life -

- What's wrong with an individual's personal decision that he has no interest in this present life?

Just trying to understand.

Suicide is a way out for depressed cowards.
Life is a challange. Only the brave die when it their time.
COWARDS die many times before the real death!

Gambrosia:

Suicide is a way out for depressed cowards.

True, I agree.

But the courageousness or cowardice of the decision is not that which I ask. I ask after it's morality.

Do human beings have the moral right to take their own lives?

Have you considered the many issues thrown up about this regarding euthnasia - do you know that there are vigoruous "Right to Die" campaigns all over Europe for example with regard to the terminally ill, etc?