My curse and my desire

My curse and my desire
a need and disease
It's my bad habit not even I have to like it
I know the warnings
they are quite clear
I fear it may be too late
the cancer I feel is near
Poison it has indeed
one that I know I need
don't worry I only have a pack or two a day
I'll quit and be okay
that's one sure bet
So...anyone have a cigarette.