Do you understand what he is saying?

Romeo is about to kill himself. Translate these passages into modern English for me:
1.How oft when men are at the point of death
Have they been merry, which their keepers call
A light'ning before death

2. Death, that hath sucked the honey of thy breath,
Hath no power yet upon thy beauty

3. Ah, dear Juliet
Why are thou yet so fair?

4. I still will stay with thee,
And never from this palace of dim night
Depart again.

5. Eyes look your last!
Arms, take your last embrace! and, lips, O you
The doors of breath, seal with a righteous kiss
A dateless bargain to engrossing Death!